Disposable arteriovenous blood taking needle

Abstract

The utility model relates to a disposable arteriovenous blood taking needle which comprises a transfer block, an arterial needle head, a venous needle head, a blood transfusion tube, a blood outlet tube and embolism blocks, the embolism blocks are sleeved on the outer side faces of the arterial needle head and the venous needle head, the arterial needle head and the venous needle head are jointly connected with the blood transfusion tube, and the transfer block is jointly connected with the blood transfusion tube and the blood outlet tube. Under the combined action of an expansion piece, a stress plate, a partition ring, a partition piece and a butt joint block in the transfer block, the blood transfusion tube and the blood outlet tube in the transfer block can be connected only once, and then irreversible damage can be generated at the joint of the blood transfusion tube and the blood outlet tube after use; meanwhile, a deformation block, a rubber plug, a solid film and a limiting opening are arranged in the embolism block, so that the artery needle head and the vein needle head can deform, the needle heads are blocked, and repeated use of the blood taking needle can be effectively prevented.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of medical instruments, concretely relates to disposable arteriovenous blood taking needle. BACKGROUND

[0002] For the existing arteriovenous blood taking scene, often there is the condition of taking blood to the artery or the vein, and in some cases, blood taking to the artery and the vein is also needed, so the use of blood taking needle becomes more common, according to the management regulation of medical instruments, blood taking needle belongs to disposable medical instrument, which needs to be discarded after use.

[0003] But the appearance and structure of the present blood taking needle are still relatively complete after use, so the blood taking needle still has the potential possibility of reuse, and in the case of reuse of the blood taking needle, some diseases that can be transmitted through blood are easily transmitted through the reused blood taking needle, thereby endangering the health of the patient. UTILITY MODEL CONTENT

[0004] The utility model aims at providing disposable arteriovenous blood taking needle to solve the problems existing in the prior art.

[0005] In order to solve the above technical problems, the utility model adopts the following technical scheme: disposable arteriovenous blood taking needle, including transfer block, one end of the transfer block is connected with one end of blood transfusion tube, the blood transfusion tube includes two, the blood transfusion tube is connected with the arterial needle head and the venous needle head at the end away from the transfer block respectively, the outside of the blood transfusion tube is sleeved with the expansion tube, the two ends of the expansion tube are in the inside and outside of the transfer block respectively, the end of the expansion tube in the transfer block is hinged with the expansion sheet arranged in a circular array.

[0006] The other end of the transfer block is provided with two blood outlet tubes, the two ends of the two blood outlet tubes are located in the inside and outside of the transfer block respectively, one end of each blood outlet tube in the transfer block is sleeved with the docking block, one end of each blood outlet tube outside the transfer block is connected with the blood collection bag, the transfer block is provided with the stress plate, and the stress plate is arranged between the docking block and the expansion tube.

[0007] The outside of the blood outlet tube is sleeved with the partition ring, the partition ring is arranged outside the transfer block, the transfer block is provided with the partition slide rail at the end close to the blood outlet tube, one end of the connecting rod is hinged to the outside of the partition ring, the other end of the connecting rod is hinged to the partition sheet through the partition slide rail, and the partition ring is moved in the direction away from the transfer block, and then the partition sheet is driven to contact the blood outlet tube through the connecting rod.

[0008] Optionally, the blood transfusion tube is provided with a plug block at one end away from the transfer block, the plug block is sleeved outside the arterial needle and the venous needle, the plug block is provided with a plug slot, a limiting opening is arranged at the joint of the plug slot and the surface of the plug block, and a deformation block is arranged in the plug slot.

[0009] Optionally, the deformation block is conical in shape, and the deformation block is arranged with the taper end close to the limiting opening.

[0010] Optionally, a rubber plug is arranged in the plug slot, and a solid rubber sheet is arranged at one end of the rubber plug away from the limiting opening.

[0011] Optionally, a supporting block is sleeved outside the arterial needle, a butterfly-shaped piece is sleeved outside the venous needle, and an auxiliary piece is sleeved outside the arterial needle and the venous needle, the auxiliary piece is attached to one end of the supporting block and the butterfly-shaped piece close to the plug block, a supporting piece is hinged to one side of the auxiliary piece, and a plurality of rubber pieces are arranged on one side of the supporting piece away from the supporting block and the butterfly-shaped piece.

[0012] Optionally, an anti-overflow blood absorption pad is arranged between the partition piece and the transfer block, and an anti-splashing blood absorption pad is arranged between the stress plate and the butt joint block.

[0013] Beneficial effects: 1. The inflation tube, the stress plate, the partition ring and the partition piece can disconnect the connection between the transfer block and the blood transfusion tube and the blood outlet tube after blood sampling is completed, thereby eliminating the subsequent use of the transfer block, and effectively preventing potential reuse of medical waste.

[0014] 2. The plug block positions the arterial needle and the venous needle when they are not used, and after blood sampling is completed, the shape of the deformation block is utilized, so that the arterial needle and the venous needle are deformed after the needle passes through the limiting opening and contacts the deformation block, and the rubber plug and the solid rubber sheet can wrap the arterial needle and the venous needle, thereby realizing the abandonment of the arterial needle and the venous needle, avoiding reuse, reducing the risk of the arterial needle and the venous needle, and avoiding the situation of occupational exposure of medical staff.

[0015] 3. The auxiliary piece and the supporting piece are combined, which can help adjust the angle of the arterial needle and the venous needle with the patient's skin during blood sampling, and when the arterial needle and the venous needle penetrate the artery or the vein due to improper operation, the distance between the supporting block or the butterfly-shaped piece and the auxiliary piece can be adjusted, thereby helping the arterial needle or the venous needle to return to a reasonable position under the premise of reducing harm to the patient, so that blood collection can continue. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1It is the whole schematic view of the utility model;

[0017] Figure 2 It is the connection schematic view of the utility model's transfer block;

[0018] Figure 3 It is the utility model Figure 2 The enlarged view of A;

[0019] Figure 4 It is the connection schematic view of the utility model's embolism block.

[0020] Mark number in drawing: 1, transfer block;11, expansion pipe;111, expansion sheet;12, butt joint block;13, partition ring;14, partition slide rail;15, connecting rod;16, partition sheet;17, stress plate;18, anti-overflow blood absorption pad;19, anti-splashing blood absorption pad;2, embolism block;21, limiting port;22, embolism slot;221, deformation block;222, rubber plug;223, solid film;23, blood transfusion tube;231, arterial needle;232, venous needle;24, bleeding tube;25, supporting block;26, butterfly sheet;3, supporting sheet;31, auxiliary sheet;32, rubber sheet. Specific implementation

[0021] In order to make the purpose and the advantage of the utility model more clearly, the following specific description of the utility model is combined with example, it should be understood that the following text is only used to describe one or several specific implementation of the utility model, and does not strictly limit the protection scope of the utility model specific request.

[0022] As Figure 1 , Figure 2 and Figure 3 Indicated, disposable arterial and venous blood taking needle, including transfer block 1, one end of transfer block 1 is connected with one end of blood transfusion tube 23, blood transfusion tube 23 includes two, blood transfusion tube 23 is connected with arterial needle 231 and venous needle 232 respectively at the end away from transfer block 1, the outside of blood transfusion tube 23 is sleeved with expansion pipe 11, both ends of expansion pipe 11 are respectively in the inside and outside of transfer block 1, the end of expansion pipe 11 in transfer block 1 is hinged with the expansion sheet 111 of circular array arrangement, the axis of each expansion sheet 111 has certain angular offset with the axis of expansion pipe 11;

[0023] The other end of transfer block 1 is provided with two bleeding tubes 24, two bleeding tubes 24 are respectively located in the inside and outside of transfer block 1, one end of each bleeding tube 24 in transfer block 1 is sleeved with butt joint block 12, there is anti-splashing blood absorption pad 19 between stress plate 17 and butt joint block 12, one end of each bleeding tube 24 outside transfer block 1 is connected with blood collection bag, stress plate 17 is arranged in transfer block 1, and stress plate 17 is arranged between butt joint block 12 and expansion pipe 11;

[0024] The surface of the force plate 17 is provided with through holes corresponding to the number of expansion tubes 11. When the expansion sheet 111 passes through the through hole on the surface of the force plate 17, it will be extruded by the inner side of the through hole and shrink towards the direction close to the axis of the expansion tube 11. After the expansion sheet 111 passes through the through hole, each expansion sheet 111 swings towards the direction away from the axis of the expansion tube 11 due to the loss of extrusion of the through hole. At this time, the expansion tube 11 and the expansion sheet 111 passing through the through hole are spliced with the butt block 12, and then the expansion tube 11 controls the communication between the blood inlet pipe 23 and the blood outlet pipe 24, so that the blood can be normally collected.

[0025] At the same time, the structure of the expansion sheet 111 determines that after passing through the through hole, each expansion sheet 111 of the circular array forms a circular arc similar to a circle, and the size of the circular arc is larger than that of the through hole. Therefore, when the expansion tube 11 is pulled to move away from the blood outlet pipe 24, the expansion sheet 111 will contact the surface of the force plate 17. Then, with the increase of the pulling force, the expansion sheet 111 starts to swing away from the axis of the through hole until the expansion sheet 111 is separated from the expansion tube 11. Then, the expansion tube 11 moves away from the blood outlet pipe 24 by passing through the through hole, and the expansion sheet 111 is broken and remains between the force plate 17 and the butt block 12. Therefore, the blood splashed at the broken part can be absorbed by the anti-splashing blood absorption pad 19, so as to avoid the reuse of the blood inlet pipe 23 and the transfer block 1, and to avoid blood splashing, so as to avoid the contact of medical staff with blood and possible occupational exposure.

[0026] The outside of the blood outlet pipe 24 is sleeved with a partition ring 13, and the partition ring 13 is arranged outside the transfer block 1. The transfer block 1 is provided with a partition slide rail 14 at one end close to the blood outlet pipe 24. One end of the connecting rod 15 is hinged to the outside of the partition ring 13, and the other end of the connecting rod 15 is hinged to the partition sheet 16 by passing through the partition slide rail 14. The anti-overflow blood absorption pad 18 is arranged between the partition sheet 16 and the transfer block 1. The partition ring 13 moves away from the transfer block 1, and then drives the partition sheet 16 to contact the blood outlet pipe 24 through the connecting rod 15.

[0027] By pulling the partition ring 13 to move away from the transfer block 1, the partition ring 13 drives the connecting rod 15 to move. Under the driving of the connecting rod 15, the partition sheet 16 slides along the direction of the partition slide rail 14. Under the driving of the connecting rod 15, the partition sheet 16 moves towards the blood outlet pipe 24. As the distance between the partition ring 13 and the transfer block 1 increases, the partition sheet 16 cuts off the blood outlet pipe 24, so that the inside and outside of the transfer block 1 are completely disconnected. At this time, the anti-overflow blood absorption pad 18 between the partition sheet 16 and the transfer block 1 can absorb the blood that may appear, so that the blood does not overflow to the outside of the transfer block 1, thereby avoiding pollution and disease transmission.

[0028] As Figure 2 , Figure 3 and Figure 4 shown, the blood transfusion tube 23 is provided with a plug block 2 at the end away from the transfer block 1, the plug block 2 is sleeved outside the arterial needle 231 and the venous needle 232, the plug block 2 is provided with a plug groove 22, the connecting part of the plug groove 22 and the surface of the plug block 2 is provided with a limiting port 21, the plug groove 22 is provided with a deformation block 221, the deformation block 221 is arranged close to the limiting port 21 with a tapered tip, and the shape of the deformation block 221 is conical;

[0029] The plug groove 22 is provided with a rubber plug 222, the rubber plug 222 is provided with a solid glue piece 223 at the end away from the limiting port 21, the solid glue piece 223 is in contact with the outer side of the deformation block 221, and the solid glue piece 223 is specifically a slice of a solid glue stick commonly used for office paper sticking;

[0030] After blood sampling of the arterial needle 231 or the venous needle 232 is completed, the arterial needle 231 or the venous needle 232 is inserted into the limiting port 21, and then the arterial needle 231 or the venous needle 232 will pass through the rubber plug 222, the rubber plug 222 will fix the position of the arterial needle 231 or the venous needle 232, then the arterial needle 231 or the venous needle 232 will touch the deformation block 221, as the arterial needle 231 or the venous needle 232 continuously penetrates into the plug groove 22, then the arterial needle 231 or the venous needle 232 will fit the deformation block 221, then the arterial needle 231 or the venous needle 232 will pass through the solid glue piece 223, and then part of the solid glue will remain in the interior of the arterial needle 231 or the venous needle 232, so that the arterial needle 231 or the venous needle 232 can be discarded, avoiding reuse of the arterial needle 231 or the venous needle 232, and meanwhile the fixing effect of the rubber plug 222 can prevent the arterial needle 231 or the venous needle 232 from falling off, causing injury to medical staff.

[0031] The outer side of the arterial needle 231 is sleeved with a supporting block 25, the outer side of the venous needle 232 is sleeved with a butterfly-shaped piece 26, and the outer sides of the arterial needle 231 and the venous needle 232 are jointly sleeved with an auxiliary piece 31, the auxiliary piece 31 is attached to the end of the supporting block 25 and the butterfly-shaped piece 26 close to the plug block 2, one side of the auxiliary piece 31 is hinged with a supporting piece 3, and the side of the supporting piece 3 away from the supporting block 25 and the butterfly-shaped piece 26 is provided with a plurality of rubber pieces 32;

[0032] The auxiliary sheet 31 is sleeved with the supporting block 25 and the butterfly sheet 26, but the supporting block 25 and the butterfly sheet 26 can be separated from the auxiliary sheet 31 according to the control of the medical staff, when the arterial needle 231 or the venous needle 232 needs to be inserted into the human body, the side of the supporting sheet 3 connected with the rubber sheet 32 is attached to the skin of the patient, the angle between the auxiliary sheet 31 and the supporting sheet 3 is adjusted, and then the blood collection is better performed, and meanwhile, after the arterial needle 231 or the venous needle 232 is accidentally inserted into the artery or the vein, the distance between the supporting block 25 or the butterfly sheet 26 and the auxiliary sheet 31 is controlled, and then the needle is adjusted back into the artery or the vein, so that the blood collection can be normally performed.

[0033] Firstly, the expansion tube 11 outside the transfer block 1 is pushed towards the transfer block 1, and then the expansion tube 11 drives the expansion sheet 111 to pass through the through hole of the stress plate 17 and abut against the abutting block 12, the arterial blood collection needle or the venous blood collection needle is removed from the plug block 2 according to actual needs, then the rubber sheet 32 at the bottom of the supporting sheet 3 is attached to the skin of the patient, then the angle between the auxiliary sheet 31 and the supporting sheet 3 is adjusted according to the selection of the artery or the vein for blood collection, after the angle adjustment is completed, the arterial needle 231 or the venous needle 232 is pushed into the artery or the vein of the patient, if the arterial needle 231 or the venous needle 232 penetrates the artery or the vein, the distance between the supporting block 25 or the butterfly sheet 26 and the auxiliary sheet 31 is increased by using the fingers of the medical staff, and then the needle tip part of the arterial needle 231 or the venous needle 232 is reinserted into the artery or the vein, so that the blood can flow normally in the blood delivery tube 23, then the blood passes through the blood outlet tube 24 and reaches the blood collection bag connected before, the medical staff collects the blood flowing in the blood outlet tube 24 in a suitable state according to the specific situation of the blood collection, after the blood collection is completed, the arterial needle 231 or the venous needle 232 is pulled out of the patient's body, the blood collection bag is disconnected from the blood outlet tube 24 and is properly handled, then the arterial needle 231 or the venous needle 232 is inserted into the limiting opening 21 and contacts the rubber plug 222, the deformation block 221 and the solid rubber sheet 223, then the expansion tube 11 is pulled until the expansion tube 11 is separated from the expansion sheet 111, the separation ring 13 is pulled and moved away from the transfer block 1, so that the blood delivery tube 23, the blood outlet tube 24 and the transfer block 1 are disconnected, and then the damaged blood collection needle is treated as medical waste.

[0034] The embodiments of the utility model are explained in detail in combination with the drawings, but the utility model is not limited to the above-mentioned embodiments, for the ordinary skilled in the art, after knowing the contents recorded in the utility model, under the premise of not departing from the principle of the utility model, a number of equivalent transformations and substitutions can be made, and these equivalent transformations and substitutions should also be regarded as belonging to the protection scope of the utility model.

Claims

1. A disposable arterial-venous blood collection needle, characterized in that: Including the transit block (1), one end of the transit block (1) is connected with one end of the blood transfusion tube (23), the blood transfusion tube (23) comprises two, the blood transfusion tube (23) is respectively connected with the arterial needle (231) and the venous needle (232) at the end away from the transit block (1), the outer side of the blood transfusion tube (23) is sleeved with the inflation tube (11), both ends of the inflation tube (11) are respectively in the inside and outside of the transit block (1), the end of the inflation tube (11) in the transit block (1) is hinged with the circular array arranged inflation sheet (111); The other end of the transit block (1) is provided with two blood outlet tubes (24), both ends of the two blood outlet tubes (24) are respectively located in the inside and outside of the transit block (1), one end of each of the blood outlet tubes (24) in the transit block (1) is sleeved with the docking block (12), one end of each of the blood outlet tubes (24) outside the transit block (1) is externally connected with the blood collection bag, the transit block (1) is provided with the stress plate (17), the stress plate (17) is arranged between the docking block (12) and the inflation tube (11); The outer side of the blood outlet tube (24) is sleeved with the partition ring (13), the partition ring (13) is arranged outside the transit block (1), the transit block (1) is provided with the partition slide rail (14) at the end close to the blood outlet tube (24), one end of the partition ring (13) is hinged with the connecting rod (15) outside, the other end of the connecting rod (15) is hinged with the partition sheet (16) through the partition slide rail (14), the partition ring (13) is moved in the direction away from the transit block (1), and then the partition sheet (16) is driven by the connecting rod (15) to contact the blood outlet tube (24).

2. The disposable arterial-venous blood taking needle according to claim 1, characterized in that, The blood transfusion tube (23) is provided with the plug block (2) at the end away from the transit block (1), the plug block (2) is sleeved outside the arterial needle (231) and the venous needle (232), the plug block (2) is provided with the plug groove (22), the connecting portion of the plug groove (22) and the surface of the plug block (2) is provided with the limiting opening (21), and the plug groove (22) is provided with the deformation block (221).

3. The disposable arterial-venous blood collection needle according to claim 2, wherein The shape of the deformation block (221) is conical, and the deformation block (221) is arranged with the taper tip close to the limiting opening (21).

4. The disposable arterial-venous blood collection needle according to claim 2, wherein The plug groove (22) is provided with the rubber plug (222), and the rubber plug (222) is provided with the solid rubber sheet (223) at the end away from the limiting opening (21).

5. The disposable arterial-venous blood collection needle according to claim 1, wherein The outer side of the arterial needle (231) is sleeved with the supporting block (25), the outer side of the venous needle (232) is sleeved with the butterfly sheet (26), and the outer sides of the arterial needle (231) and the venous needle (232) are jointly sleeved with an auxiliary sheet (31). The auxiliary sheet (31) is attached to the end of the supporting block (25) and the butterfly sheet (26) close to the plug block (2), one side of the auxiliary sheet (31) is hinged with the supporting sheet (3), and the side of the supporting sheet (3) away from the supporting block (25) and the butterfly sheet (26) is provided with a plurality of rubber sheets (32).

6. The disposable arterial-venous blood collection needle according to claim 1, wherein, The partition piece (16) is provided with an anti-overflow blood absorption pad (18) between the transfer block (1), and the stress plate (17) is provided with an anti-splashing blood absorption pad (19) between the docking block (12).

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