Blood transfusion apparatus capable of preventing occupational exposure

Abstract

The utility model relates to the technical field of blood transfusion apparatuses, in particular to a blood transfusion apparatus capable of preventing occupational exposure. The equipment comprises a bottle inserting needle, a shield mechanism and a positioning mechanism, the bottle inserting needle comprises a needle head and a needle seat, the shield mechanism comprises a folding sleeve, and the positioning mechanism comprises a limiting end cover; one end of the folding sleeve is connected with the needle seat, and the other end of the folding sleeve is connected with the limiting end cover. When the blood transfusion apparatus capable of preventing occupational exposure is used, the limiting end cover is used for being connected with an opening of a blood transfusion bag; when the needle is inserted, the needle base compresses the folding sleeve and drives the needle head to protrude out of the folding sleeve to be inserted into a blood transfusion bag. When the needle is withdrawn, the needle seat stretches the folding sleeve and drives the needle head to retract into the folding sleeve, so that the needle head is separated from a person in the operation process. The problem of occupational exposure caused by the fact that medical staff are contaminated by residual blood on a bottle inserting needle of a blood transfusion apparatus pulled out of a blood transfusion bag is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to blood transfusion device technical field, especially a blood transfusion device that prevents occupational exposure. BACKGROUND

[0002] Blood transfusion device is a transfusion instrument that establishes the passage between blood and vein, and its working principle is that blood is driven from blood transfusion bag to the blood vessel system of patient through gravity or pressure difference, when blood transfusion is finished, physiological saline is usually used to flush the blood transfusion device to prevent the waste of blood resource in the blood transfusion device, and when continuously transfusing the blood of different blood donors, a small amount of physiological saline should be input to flush the blood transfusion device after the blood of the former bag is transfused, and the next bag of blood is connected to continue transfusion to avoid hemolysis reaction.

[0003] However, blood will be attached to medical staff and further cause occupational exposure because the blood transfusion device bottle needle pulled out from the blood transfusion bag will be stained with blood. UTILITY MODEL CONTENT

[0004] The utility model provides a blood transfusion device that prevents occupational exposure to solve the problem that the blood left on the blood transfusion device bottle needle pulled out from the blood transfusion bag is attached to medical staff and further causes occupational exposure.

[0005] In order to solve the above technical problem, the technical scheme provided by the utility model is as follows:

[0006] A blood transfusion device that prevents occupational exposure comprises a bottle needle, a shield mechanism and a positioning mechanism.

[0007] The bottle needle comprises a needle head and a needle seat, the shield mechanism comprises a folding sleeve, and the positioning mechanism comprises a limiting end cover.

[0008] One end of the folding sleeve is connected with the needle seat, and the other end is connected with the limiting end cover; the needle head is arranged in the folding sleeve.

[0009] The limiting end cover is used to be connected with the opening of the blood transfusion bag; when the needle is inserted, the needle seat compresses the folding sleeve and drives the needle head to protrude from the folding sleeve to be inserted into the blood transfusion bag; when the needle is pulled out, the needle seat stretches the folding sleeve and drives the needle head to retract into the folding sleeve.

[0010] The limiting end cover is used to be connected with the opening of the blood transfusion bag; when the needle is inserted, the needle seat compresses the folding sleeve and drives the needle head to protrude from the folding sleeve to be inserted into the blood transfusion bag; when the needle is pulled out, the needle seat stretches the folding sleeve and drives the needle head to retract into the folding sleeve.

[0011] Further, the shield mechanism further comprises a reset spring; one end of the reset spring is connected with the needle seat, and the other end is connected with the limiting end cover, and the reset spring is configured to have the tendency to drive the limiting end cover and the needle seat to move away from each other.

[0012] Further, the limiting end cover comprises a guide sleeve; the guide sleeve is sleeved on the needle and is in sliding connection with the needle.

[0013] Further, the limiting end cover further comprises an elastic locking ring; the elastic locking ring is capable of being sleeved on the opening of the blood transfusion bag; the elastic locking ring is fixed on the opening of the blood transfusion bag under the action of the elastic force of the elastic locking ring.

[0014] Further, the positioning mechanism further comprises a blood absorption ring; the blood absorption ring is connected to the inside of the limiting end cover; when the needle is pulled out, the needle passes through the blood absorption ring so that the blood remaining on the surface of the needle is absorbed by the blood absorption ring.

[0015] Further, the blood absorption ring comprises a plurality of deformation plates which are arranged around the axis of the needle; when the needle is pulled out, the deformation plates abut against the needle so that the blood remaining on the surface of the needle is absorbed.

[0016] Further, the positioning mechanism further comprises a blood scraping plate; the blood scraping plate is provided with a plug hole; the blood scraping plate is connected to the inside of the limiting end cover and is located in the cavity formed by the blood absorption ring and the limiting end cover; the needle can move along the plug hole and the inner wall of the plug hole abuts against the needle.

[0017] Further, the material of the blood scraping plate is an elastic material; when the needle is pulled out of the plug hole, the plug hole is closed.

[0018] Further, the positioning mechanism further comprises a pressing ring; the pressing ring is connected to the inside of the limiting end cover; the pressing ring presses the blood scraping plate against the limiting end cover so that the plug hole has a tendency to be closed.

[0019] Further, the positioning mechanism further comprises a sealing film; the sealing film is connected to the end of the limiting end cover which is away from the bottle insertion needle; in an initial state, the sealing film seals the end of the limiting end cover which is away from the bottle insertion needle; the blood absorption ring, the plurality of deformation plates, the blood scraping plate and the pressing ring are all arranged in the cavity formed by the limiting end cover and the sealing film.

[0020] The beneficial effects of the blood transfusion device for preventing occupational exposure in the utility model are analyzed as follows:

[0021] The device comprises a bottle inserting needle, a shield mechanism and a positioning mechanism; the bottle inserting needle comprises a needle head and a needle seat, the shield mechanism comprises a folding sleeve, and the positioning mechanism comprises a limiting end cap; one end of the folding sleeve is connected with the needle seat, and the other end is connected with the limiting end cap; the needle head is arranged in the folding sleeve; the limiting end cap is used for being connected with an opening of a blood transfusion bag; when the needle is inserted, the needle seat compresses the folding sleeve and drives the needle head to protrude from the folding sleeve to be inserted into the blood transfusion bag; when the needle is pulled out, the needle seat stretches the folding sleeve and drives the needle head to retract into the folding sleeve.

[0022] The blood transfusion device for preventing occupational exposure provided by the utility model is used in the process, the limiting end cap is used for being connected with the opening of the blood transfusion bag; when the needle is inserted, the needle seat compresses the folding sleeve and drives the needle head to protrude from the folding sleeve to be inserted into the blood transfusion bag; when the needle is pulled out, the needle seat stretches the folding sleeve and drives the needle head to retract into the folding sleeve, so that the needle head is separated from the personnel in the operation process, thereby avoiding the problem that the blood is contaminated to the medical personnel and causes occupational exposure. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical scheme in the specific embodiment or related technology of the utility model, the drawings needed to be used in the specific embodiment or related technology description will be briefly introduced below, and obviously, the drawings in the following description are some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without creating labor.

[0024] Fig. 1 The structural schematic diagram of the blood transfusion device for preventing occupational exposure provided by the utility model embodiment is shown in the figure.

[0025] Fig. 2 The sectional view of the blood transfusion device for preventing occupational exposure provided by the utility model embodiment is shown in the figure.

[0026] Fig. 3 The three-dimensional structural explosion schematic diagram of the positioning mechanism in the blood transfusion device for preventing occupational exposure provided by the utility model embodiment is shown in the figure.

[0027] Icon:

[0028] 100-bottle inserting needle; 110-needle head; 120-needle seat; 200-shield mechanism; 210-folding sleeve; 220-return spring; 300-positioning mechanism; 310-limiting end cap; 311-guide sleeve; 312-elastic locking ring; 320-blood scraping plate; 321-insertion and pulling hole; 330-squeezing ring; 340-blood suction ring; 341-deformation plate; 350-sealing film. DETAILED DESCRIPTION

[0029] Blood is easily contaminated to the medical personnel due to the blood on the blood transfusion device bottle inserting needle pulled out from the blood transfusion bag, and then occupational exposure is caused.

[0030] Therefore, the present application provides a transfusion device for preventing occupational exposure, which comprises a bottle insertion needle 100, a shield mechanism 200 and a positioning mechanism 300.

[0031] The structure and shape of the transfusion device for preventing occupational exposure provided by the present application are described in detail as follows: Figs. 1-3 The structure and shape of the transfusion device for preventing occupational exposure provided by the present application are described in detail as follows:

[0032] The bottle insertion needle 100 comprises a needle 110 and a needle seat 120, the shield mechanism 200 comprises a folding sleeve 210, and the positioning mechanism 300 comprises a limiting end cap 310. One end of the folding sleeve 210 is connected with the needle seat 120, and the other end is connected with the limiting end cap 310. The needle 110 is arranged in the folding sleeve 210. The limiting end cap 310 is used for connecting with the opening of a transfusion bag. When the needle is inserted, the needle seat 120 compresses the folding sleeve 210 and drives the needle 110 to protrude from the folding sleeve 210 to be inserted into the transfusion bag. When the needle is pulled out, the needle seat 120 stretches the folding sleeve 210 and drives the needle 110 to retract into the folding sleeve 210.

[0033] In the present application, the limiting end cap 310 is used for connecting with the opening of a transfusion bag. When the needle is inserted, the needle seat 120 compresses the folding sleeve 210 and drives the needle 110 to protrude from the folding sleeve 210 to be inserted into the transfusion bag. When the needle is pulled out, the needle seat 120 stretches the folding sleeve 210 and drives the needle 110 to retract into the folding sleeve 210, so that the needle 110 is separated from the personnel during the operation process, thereby avoiding the problem that the blood is contaminated to the medical staff and causes occupational exposure.

[0034] In order to avoid that the needle 110 protrudes from the limiting end cap 310 after the limiting end cap 310 is separated from the transfusion bag, the shield mechanism 200 further comprises a reset spring 220.

[0035] Specifically, one end of the reset spring 220 is connected with the needle seat 120, and the other end is connected with the limiting end cap 310. The reset spring 220 is configured to have a tendency to drive the limiting end cap 310 and the needle seat 120 to move away from each other.

[0036] In order to avoid that the reset spring 220 drives the needle 110 to separate from the transfusion bag through the needle seat 120:

[0037] The separation stress transmitted by the reset spring 220 to the needle 110 through the needle seat 120 under elastic deformation is set to be less than the friction force between the needle 110 and the transfusion bag, so that the reset spring 220 drives the needle 110 to separate from the transfusion bag through the needle seat 120 is avoided.

[0038] In this embodiment, the reset spring 220 is configured to have a tendency to move the drive limiting end cover 310 and the needle seat 120 away from each other, so that the reset spring unfolds the folding sleeve 210 through its elastic deformation, thereby ensuring that after the limiting end cover 310 is separated from the blood transfusion bag, the needle 110 is stored in the folding sleeve 210, thereby avoiding the situation that after the limiting end cover 310 is separated from the blood transfusion bag, the needle 110 protrudes from the limiting end cover 310.

[0039] Regarding the shape and structure of the positioning mechanism 300, in particular:

[0040] The limiting end cover 310 comprises a guide sleeve 311; the guide sleeve 311 is sleeved on the needle 110 and is in sliding connection with the needle 110.

[0041] In order to realize the connection between the limiting end cover 310 and the outlet of the blood transfusion bag, the limiting end cover 310 further comprises an elastic locking ring 312.

[0042] Specifically, the elastic locking ring 312 can be sleeved on the opening of the blood transfusion bag; the elastic locking ring 312 is fixed on the opening of the blood transfusion bag under the action of its own elastic force.

[0043] In order to avoid the blood on the needle 110 from being contaminated with personnel due to misoperation, the positioning mechanism 300 further comprises a blood absorption ring 340, and the material of the blood absorption ring 340 includes but is not limited to medical sponge and medical gauze.

[0044] Specifically, the blood absorption ring 340 is connected to the inside of the limiting end cover 310; when the needle is pulled out, the needle 110 passes through the blood absorption ring 340, so that the blood remaining on the surface is absorbed by the blood absorption ring 340.

[0045] In order to avoid the blood absorption ring 340 from being taken away during the process that the needle 110 passes through the blood absorption ring 340:

[0046] Specifically, the blood absorption ring 340 comprises a plurality of deformation plates 341 arranged around the axis of the needle 110; when the needle is pulled out, the deformation plates 341 abut against the needle 110, so that the blood remaining on the surface of the needle 110 is absorbed.

[0047] In order to avoid the blood remaining on the needle 110 passing through the blood absorption ring 340, the positioning mechanism 300 further comprises a blood scraping plate 320.

[0048] Specifically, the blood scraping plate 320 is provided with a plug-in hole 321; the blood scraping plate 320 is connected to the inside of the limiting end cover 310 and is located in the cavity formed by the blood absorption ring 340 and the limiting end cover 310;

[0049] The needle 110 can move along the plug-in hole 321, and the inner wall of the plug-in hole 321 abuts against the needle 110.

[0050] In order to avoid the needle 110 in the retractable folding sleeve 210 from being contaminated, and to improve the firmness of the connection between the needle 110 and the blood transfusion bag:

[0051] Specifically, the material of the blood scraping plate 320 is an elastic material; when the needle 110 is pulled out of the plug hole 321, the plug hole 321 is closed.

[0052] In order to realize that the plug hole 321 is closed when the needle 110 is pulled out of the plug hole 321, the positioning mechanism 300 further comprises a pressing ring 330.

[0053] Specifically, the pressing ring 330 is connected to the inside of the limiting end cover 310; the pressing ring 330 presses the blood scraping plate 320 against the limiting end cover 310, so that the plug hole 321 has a tendency to close.

[0054] In order to avoid the blood transfusion device from being contaminated before use, the positioning mechanism 300 further comprises a sealing film 350.

[0055] Specifically, the sealing film 350 is connected to the end of the limiting end cover 310 away from the bottle insertion needle 100; in the initial state, the sealing film 350 seals the end of the limiting end cover 310 away from the bottle insertion needle 100, and the blood suction ring 340, the plurality of deformation plates 341, the blood scraping plate 320 and the pressing ring 330 are all arranged in the cavity surrounded by the limiting end cover 310 and the sealing film 350.

[0056] In this embodiment, the sealing film 350 is first separated from the limiting end cover 310, and the sealing film 350 seals the end of the limiting end cover 310 away from the bottle insertion needle 100, thereby avoiding contamination of the blood transfusion device before use. Then the limiting end cover 310 is fitted to the outlet of the blood transfusion bag, and in this process, the elastic locking ring 312 fixes the limiting end cover 310 to the outlet of the blood transfusion bag by elastic deformation. Then the needle 110 is moved along the guide sleeve 311 by the needle seat 120, so that the needle 110 is inserted into the limiting end cover 310 under the guidance of the guide sleeve 311, thereby avoiding misalignment between the limiting end cover 310 and the bottle insertion needle 100 caused by deformation of the folding sleeve 210. The needle 110 moves through the blood scraping plate 320, the pressing ring 330 and the blood suction ring 340 and is inserted into the blood transfusion bag, at this time the pressing ring 330 drives the blood scraping plate 320 to elastically deform under the cooperation of the limiting end cover 310, and then the blood scraping plate 320 clamps and fixes the needle 110 in the plug hole 321, thereby improving the firmness of the connection between the needle 110 and the blood transfusion bag.

[0057] In addition, when it is necessary to separate the bottle insertion needle 100 from the blood transfusion bag, the needle head 110 is first moved by the needle seat 120, and the moving needle head 110 passes through the blood suction ring 340. In this process, the needle head 110 drives the plurality of deformation plates 341 to elastically deform, so that the plurality of deformation plates 341 are attached to the needle head 110, and the plurality of deformation plates 341 absorb the blood on the needle head 110 through the material characteristics thereof. The needle head 110 passing through the blood suction ring 340 then passes through the plug hole 321, and the elastically deformed blood scraping plate 320 drives the plug hole 321 to abut against the needle head 110, so that the residual blood on the needle head 110 is stripped, and the stripped blood is absorbed by the blood suction ring 340. After the needle head 110 is retracted into the folding sleeve 210, the elastically deformed blood scraping plate 320 closes the plug hole 321, and at this time, the needle head 110 is located in the cavity formed by the folding sleeve 210, the limiting end cover 310 and the blood scraping plate 320, so that the needle head 110 is prevented from being contaminated.

[0058] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A transfusion device for preventing occupational exposure, characterized in that: comprising a bottle insertion needle (100), a shield mechanism (200) and a positioning mechanism (300); the bottle insertion needle (100) comprises a needle head (110) and a needle seat (120), the shield mechanism (200) comprises a folding sleeve (210), and the positioning mechanism (300) comprises a limiting end cap (310); one end of the folding sleeve (210) is connected with the needle seat (120), and the other end is connected with the limiting end cap (310); the needle head (110) is arranged in the folding sleeve (210); the limiting end cap (310) is used for being connected with an opening of a transfusion bag; when the needle is inserted, the needle seat (120) compresses the folding sleeve (210) and drives the needle head (110) to protrude out of the folding sleeve (210) to be inserted into the transfusion bag; when the needle is pulled out, the needle seat (120) stretches the folding sleeve (210) and drives the needle head (110) to retract into the folding sleeve (210).

2. The transfusion device for preventing occupational exposure according to claim 1, characterized in that: the shield mechanism (200) further comprises a reset spring (220); one end of the reset spring (220) is connected with the needle seat (120), and the other end is connected with the limiting end cap (310), and the reset spring (220) is configured to have a tendency to drive the limiting end cap (310) and the needle seat (120) to move away from each other.

3. The transfusion device for preventing occupational exposure according to claim 2, characterized in that: the limiting end cap (310) comprises a guide sleeve (311); the guide sleeve (311) is sleeved on the needle head (110) and is in sliding connection with the needle head (110).

4. The transfusion device for preventing occupational exposure according to claim 3, characterized in that: the limiting end cap (310) further comprises an elastic locking ring (312), and the elastic locking ring (312) can be sleeved on the opening of the transfusion bag; the elastic locking ring (312) is fixed on the opening of the transfusion bag under the action of its own elastic force.

5. The transfusion device for preventing occupational exposure according to claim 4, characterized in that: the positioning mechanism (300) further comprises a blood suction ring (340); the blood suction ring (340) is connected to the inside of the limiting end cap (310); when the needle is pulled out, the needle head (110) passes through the blood suction ring (340), so that the blood remaining on the surface of the needle head (110) is absorbed by the blood suction ring (340).

6. The transfusion device for preventing occupational exposure according to claim 5, characterized in that: the blood suction ring (340) comprises a plurality of deformation plates (341) arranged around the axis of the needle head (110); when the needle is pulled out, the deformation plates (341) abut against the needle head (110), so that the blood remaining on the surface of the needle head (110) is absorbed.

7. The transfusion device for preventing occupational exposure according to claim 6, characterized in that: the positioning mechanism (300) further comprises a blood scraping plate (320). ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ A plug hole (321) is formed on the blood scraping plate (320); The blood scraping plate (320) is connected to the inside of the limiting end cover (310) and located in the cavity formed by the blood suction ring (340) and the limiting end cover (310); The needle (110) can move along the plug hole (321), and the inner wall of the plug hole (321) abuts against the needle (110).

8. The blood transfusion device for preventing occupational exposure according to claim 7, wherein: The material of the blood scraping plate (320) is elastic material; When the needle (110) is withdrawn from the plug hole (321), the plug hole (321) is closed.

9. The blood transfusion device for preventing occupational exposure according to claim 8, wherein: The positioning mechanism (300) further comprises a pressing ring (330); The pressing ring (330) is connected to the inside of the limiting end cover (310); The pressing ring (330) presses the blood scraping plate (320) against the limiting end cover (310), so that the plug hole (321) has a tendency to be closed.

10. The blood transfusion device for preventing occupational exposure according to claim 9, wherein: The positioning mechanism (300) further comprises a sealing film (350); The sealing film (350) is connected to the end of the limiting end cover (310) away from the bottle insertion needle (100); In the initial state, the sealing film (350) seals the end of the limiting end cover (310) away from the bottle insertion needle (100), and the blood suction ring (340), the plurality of deformation plates (341), the blood scraping plate (320) and the pressing ring (330) are all arranged in the cavity surrounded by the limiting end cover (310) and the sealing film (350).

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