Multi-channel steady-flow extension tube

Abstract

The utility model relates to a multi-channel steady-flow extension tube. The technical problems that an existing extension tube is too long and cannot be folded, potential sanitation hazards exist, and adding of a small amount of liquid medicine is too troublesome are solved. Comprising a main pipe body, one end of the main pipe body is connected with a connector base, the end, away from the main pipe body, of the connector base is connected with a plurality of auxiliary pipe bodies, and the end, close to the auxiliary pipe bodies, of the connector base is provided with at least one limiting sleeve body which enables the auxiliary pipe bodies to be attached to one another and axially moves in the length direction of the auxiliary pipe bodies; a liquid cavity is formed in the connector base, an infusion tube body is arranged on the circumferential outer side of the connector base, and a needle tube connecting assembly is arranged at the end, away from the connector base, of the infusion tube body. The device has the advantages that infusion stability between the connector base and the auxiliary tube body is guaranteed through the fixing sleeve body, the auxiliary tube body is prevented from being separated from the connector base when being pulled, meanwhile, the auxiliary tube body is folded through the limiting sleeve body, potential sanitation hazards are reduced, and a needle tube connecting assembly can be used when a small amount of liquid medicine needs to be added.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical equipment, and in particular relates to a multi-channel steady-flow extension tube. Background Art

[0002] Most of the infusion sets used in existing medical institutions are single-channel infusion sets. However, in the actual treatment process, different drugs need to be infused into the patient at the same time. Sometimes these drugs cannot be mixed in advance. Therefore, the significance of a multi-channel infusion set is that it can perform multi-channel infusion and multi-channel drug delivery at the same time. However, the existing multi-channel infusion extension tubes are not equipped with flow limiting devices, which may easily lead to excessive flow and cause discomfort to the patient. In addition, the extension tubes are long and easily entangled and scattered on the bed. When the extension tubes are pulled, they are easily detached from the multi-channel connectors, which poses a health hazard. At the same time, when adding a small amount of liquid medicine, it is too troublesome to add it from the needle seat.

[0003] In order to solve the deficiencies of the prior art, people have conducted long-term exploration and proposed various solutions. For example, a Chinese patent document discloses a multi-channel spherical insert extension tube [202021759031.2], which includes a tube body, a joint connected to one end of the tube body and the interface of the joint is closed by a sheath, a multi-channel joint connected to the other end of the tube body, and the multi-channel joint is connected to a plurality of extension tubes connected to the tube body, a needle seat connected to the other end of the extension tube and the interface of the needle seat is closed by a protective cap, spherical inserts are respectively installed on the extension tubes, the multi-channel joint has a single-channel seat connected to the tube body and a multi-channel seat connected to the extension tube, a one-way valve is arranged between the single-channel seat and the multi-channel seat to prevent the liquid in the tube body from flowing back into the extension tube, and an on-off structure is arranged between the one-way valve and the multi-channel seat.

[0004] The above solution solves the problem of too fast flow rate caused by the lack of flow limiting device in the existing extension tube to a certain extent, but the solution still has many shortcomings, such as the extension tube is too long to be retracted, posing a health hazard, and adding a small amount of liquid medicine is too troublesome. Summary of the invention

[0005] The utility model aims to provide a multi-channel flow-stabilizing extension tube in view of the above problems.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions: a multi-channel flow-stabilizing extension tube, comprising a main body, one end of the main body is connected to a joint seat, the joint seat is connected to a plurality of auxiliary tube bodies at one end away from the main body, the joint seat is provided with at least one limiting sleeve near the end of the auxiliary tube body, which can make the auxiliary tube bodies fit each other and move axially along the length direction of the auxiliary tube body, and a fixed sleeve is provided between the joint seat and the auxiliary tube body, the inner side of the joint seat has a liquid cavity, the outer side of the joint seat is provided with an infusion tube body communicating with the liquid cavity, and the end of the infusion tube body away from the joint seat is provided with a needle tube connection assembly. The auxiliary tube body is gathered by the limiting sleeve to prevent the auxiliary tube body from falling down due to excessive length, thereby affecting hygiene, and the fixed sleeve can ensure the connection between the auxiliary tube body and the joint seat, and prevent the auxiliary tube body from being separated from the joint seat when subjected to tension, thereby affecting normal infusion.

[0007] In the above-mentioned multi-channel flow-stabilizing extension tube, one end of the joint seat is provided with a plurality of auxiliary tube connectors extending axially outward, the auxiliary tube bodies are respectively sleeved on the outside of the auxiliary tube connectors, the end of the joint seat away from the auxiliary tube connector is provided with a main tube connector, the main tube body is arranged on the main tube connector, and the inner sides of the main tube connector and the auxiliary tube connector are both provided with connection holes communicating with the liquid cavity. The auxiliary tube body is plugged into the outside of the auxiliary tube connector, and the main tube body is plugged into the inside of the main tube connector, and the liquid medicine flows into the liquid cavity through the auxiliary tube body and then flows out from the main tube body.

[0008] In the above-mentioned multi-channel flow-stabilizing extension tube, one end of the fixed sleeve is provided with a fixing part, and a plurality of fixing holes are provided on the inner side of the fixing part in the circumferential direction, and the auxiliary pipe connector and the auxiliary pipe body are both arranged on the inner side of the fixing holes in the circumferential direction. The auxiliary pipe connector is connected to the auxiliary pipe body, and the fixing holes of the fixed sleeve are arranged on the outer side of the auxiliary pipe body, which achieves a double fixing effect.

[0009] In the above-mentioned multi-channel flow-stabilizing extension tube, the fixed sleeve body is provided with a clamping part at one end away from the fixing part, and the clamping part is provided with a clamping groove axially recessed inwardly and communicating with the fixing hole on the inner side in the circumferential direction, and the clamping groove is sleeved on the outer side of one end of the joint seat close to the auxiliary pipe connector. The fixed sleeve body is connected to the joint seat through the clamping groove, and the clamping part plays the role of stabilizing the fixed sleeve body to prevent the fixed sleeve body and the auxiliary pipe body from being separated from the joint seat together.

[0010] In the above-mentioned multi-channel flow-stabilizing extension tube, the limiting sleeve is a columnar structure, the limiting sleeve is provided with a plurality of axially penetrating limiting holes on the inner side of the circumference, the auxiliary tube body corresponds to the limiting holes one by one, the inner diameter of the limiting holes is equal to the diameter of the auxiliary tube body, and the inner diameter of the limiting holes is smaller than the inner diameter of the fixed hole. The limiting sleeve can be selected in number according to the specific situation and can be freely adjusted to shrink the auxiliary tube body.

[0011] In the above-mentioned multi-channel flow-stabilizing extension tube, the needle-tube connection assembly includes an infusion part arranged at one end of the infusion tube body away from the connector seat, the infusion part has an arc surface at the end away from the infusion tube body, the arc surface is provided with an infusion port communicating with the infusion tube body on the inner side of the circumference, and the infusion part is provided with an opening and closing assembly at the end away from the infusion tube body. The infusion part is used to infuse a small amount of urgently needed liquid medicine. When a small amount of liquid medicine needs to be added, the doctor can connect the needle tube to the infusion part, and then infuse it into the liquid cavity through the infusion tube body. This is simple to operate and saves time.

[0012] In the above-mentioned multi-channel flow-stabilizing extension tube, the opening and closing assembly includes a plug fitting with the arc surface, one end of the plug is provided with a plugging column axially plugged into the infusion port, and the end of the plug away from the plugging column is also provided with a extraction column. When injecting liquid medicine, the plug is pulled out by the extraction column, the extraction column can ensure hygiene, and the blocking column can prevent the liquid medicine in the liquid cavity from flowing out.

[0013] In the above-mentioned multi-channel flow-stabilizing extension tube, the auxiliary tube body is provided with a needle seat at one end away from the connector seat, an air tube is provided on the circumferential outer side of the needle seat, a protective cover is provided at the end of the needle seat, and a clamping piece is provided on the outer side of the auxiliary tube body at one end away from the protective cover.

[0014] In the above-mentioned multi-channel flow-stabilizing extension tube, the inner side of the clamping piece is provided with a clamping channel, and through holes connected to the clamping channel are respectively provided at both ends of the clamping piece, and the auxiliary tube body axially penetrates into the clamping channel through the through holes. The clamping piece has a movable part on one side and a positioning part on the other side, and the auxiliary tube body is located between the movable part and the positioning part, and the movable part and the positioning part are provided with a protrusion that abuts against the auxiliary tube body on the side corresponding to the positioning part.

[0015] In the above-mentioned multi-channel steady flow extension tube, an infusion connector is provided at one end of the main pipe body away from the connector seat, and a protective sleeve is provided at one end of the infusion connector away from the main pipe body.

[0016] Compared with the existing technology, the advantages of the utility model are:

[0017] The device ensures the stability of infusion between the connector seat and the auxiliary tube body by fixing the sleeve, preventing the auxiliary tube body from being separated from the connector seat when subjected to tension and affecting normal infusion. At the same time, the auxiliary tube body is retracted by the limiting sleeve to reduce health hazards. When a small amount of liquid medicine needs to be added, the needle tube connection assembly can be used to complete it, which is simple to operate and saves time. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the utility model.

[0019] Figure 2It is an exploded view of the local structure of the utility model.

[0020] Figure 3 It is a structural schematic diagram of the joint seat in the utility model.

[0021] Figure 4 It is a structural sectional view of the joint seat in the utility model.

[0022] Figure 5 It is a structural sectional view of a fixed sleeve in the utility model.

[0023] In the figure: main body 1, infusion connector 11, protective sleeve 12, connector seat 2, liquid cavity 21, auxiliary tube connector 22, main tube connector 23, connecting hole 24, auxiliary tube body 3, needle seat 31, air tube 32, protective cover 33, limiting sleeve body 4, limiting hole 41, fixed sleeve body 5, fixing part 51, fixing hole 52, clamping part 53, clamping groove 54, infusion tube body 6, needle tube connecting assembly 7, infusion part 71, arc surface 72, infusion port 73, opening and closing assembly 8, plug member 81, blocking column 82, extraction column 83, clamping member 9, clamping channel 91, through hole 92, movable part 93, positioning part 94, and protrusion 95. DETAILED DESCRIPTION

[0024] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0025] like Figure 1-5 As shown, a multi-channel flow-stabilizing extension tube includes a main body 1, one end of the main body 1 is connected to a joint seat 2, and the end of the joint seat 2 away from the main body 1 is connected to a plurality of sub-tube bodies 3, and the end of the joint seat 2 close to the sub-tube body 3 is provided with at least one limiting sleeve 4 that can make the sub-tube bodies 3 fit each other and move axially along the length direction of the sub-tube body 3, and a fixed sleeve 5 is provided between the joint seat 2 and the sub-tube body 3, the inner side of the joint seat 2 has a liquid cavity 21, and the outer side of the joint seat 2 is provided with an infusion tube body 6 that communicates with the liquid cavity 21, and the end of the infusion tube body 6 away from the joint seat 2 is provided with a needle tube connection assembly 7. The sub-tube body 3 is gathered by the limiting sleeve 4 to prevent the sub-tube body 3 from falling down due to excessive length, thereby affecting hygiene, and the fixed sleeve 5 can ensure the connection between the sub-tube body 3 and the joint seat 2, and prevent the sub-tube body 3 from being separated from the joint seat 2 when subjected to tension, thereby affecting normal infusion.

[0026] Combination Figure 3 and Figure 4As shown, one end of the joint seat 2 is provided with a plurality of auxiliary pipe connectors 22 extending axially outward, and the auxiliary pipe bodies 3 are respectively sleeved on the outside of the auxiliary pipe connectors 22, and the end of the joint seat 2 away from the auxiliary pipe connectors 22 is provided with a main pipe connector 23, and the main pipe body 1 is arranged on the main pipe connector 23, and the inner sides of the main pipe connector 23 and the auxiliary pipe connector 22 are both provided with connecting holes 24 communicating with the liquid cavity 21. The auxiliary pipe body 3 is plugged into the outside of the auxiliary pipe connector 22, and the main pipe body 1 is plugged into the inside of the main pipe connector 23, and the liquid medicine flows into the liquid cavity 21 through the auxiliary pipe body 3, and then flows out from the main pipe body 1.

[0027] Combination Figure 2 and Figure 5 As shown, a fixing portion 51 is provided at one end of the fixing sleeve 5, and a plurality of fixing holes 52 are provided on the inner side of the fixing portion 51 in the circumferential direction, and the auxiliary pipe connector 22 and the auxiliary pipe body 3 are both arranged on the inner side of the fixing holes 52 in the circumferential direction. The auxiliary pipe connector 22 is connected to the auxiliary pipe body 3, and the fixing holes 52 of the fixing sleeve 5 are arranged on the outer side of the auxiliary pipe body 3, which achieves a double fixing effect.

[0028] Among them, a clamping portion 53 is provided at one end of the fixing sleeve 5 away from the fixing portion 51, and a clamping groove 54 is provided on the inner side of the clamping portion 53, which is axially recessed inward and communicated with the fixing hole 52. The clamping groove 54 is sleeved on the outer side of one end of the joint seat 2 close to the auxiliary pipe connector 22. The fixing sleeve 5 is connected to the joint seat 2 through the clamping groove 54, and the clamping portion 53 plays the role of firmly fixing the sleeve 5, preventing the fixing sleeve 5 and the auxiliary pipe body 3 from being separated from the joint seat 2 together.

[0029] Specifically, the limiting sleeve 4 is a columnar structure, and a plurality of axially penetrating limiting holes 41 are provided on the inner side of the limiting sleeve 4 in the circumferential direction, and the auxiliary tube 3 corresponds to the limiting holes 41 one by one, and the inner diameter of the limiting holes 41 is equal to the diameter of the auxiliary tube 3, and the inner diameter of the limiting holes 41 is smaller than the inner diameter of the fixing hole 52. The limiting sleeve 4 can be selected in number according to the specific situation and can be freely adjusted to shrink the auxiliary tube 3.

[0030] Combination Figure 2 and Figure 3 As shown, the needle tube connection assembly 7 includes an infusion part 71 arranged at the end of the infusion tube body 6 away from the connector seat 2, and the end of the infusion part 71 away from the infusion tube body 6 has an arc surface 72, and the arc surface 72 is provided with an infusion port 73 communicating with the infusion tube body 6 on the inner side of the circumference, and the end of the infusion part 71 away from the infusion tube body 6 is provided with an opening and closing assembly 8. The infusion part 71 is used to infuse a small amount of urgently needed liquid medicine. When a small amount of liquid medicine needs to be added, the doctor can connect the needle tube to the infusion part 71, and then infuse it into the liquid cavity 21 through the infusion tube body 6, which is simple to operate and saves time.

[0031] The opening and closing assembly 8 includes a plug 81 that fits the arc surface 72, one end of the plug 81 is provided with a plugging column 82 that is axially plugged into the infusion port 73, and the end of the plug 81 away from the plugging column 82 is also provided with a extraction column 83. When injecting the liquid medicine, the plug 81 is pulled out by the extraction column 83, the extraction column 83 can ensure hygiene, and the blocking column 82 can prevent the liquid medicine in the liquid cavity 21 from flowing out.

[0032] like Figure 1 As shown, a needle seat 31 is provided at one end of the auxiliary tube body 3 away from the connector seat 2, an air tube 32 is provided on the circumferential outer side of the needle seat 31, a protective cover 33 is provided at the end of the needle seat 31, and a clamping piece 9 is provided on the outer side of the auxiliary tube body 3 at one end of the needle seat 31 away from the protective cover 33.

[0033] Among them, the inner side of the clamping member 9 is provided with a clamping channel 91, and the two ends of the clamping member 9 are respectively provided with through holes 92 connected to the clamping channel 91. The auxiliary tube body 3 axially penetrates into the clamping channel 91 through the through hole 92. The clamping member 9 has a movable part 93 on one side and a positioning part 94 on the other side. The auxiliary tube body 3 is located between the movable part 93 and the positioning part 94, and the movable part 93 and the positioning part 94 are provided with a protrusion 95 that abuts against the auxiliary tube body 3 on the corresponding side.

[0034] Specifically, an infusion connector 11 is disposed at one end of the main body 1 away from the connector seat 2 , and a protective cover 12 is disposed at one end of the infusion connector 11 away from the main body 1 .

[0035] The principle of this embodiment is:

[0036] The main body 1 is connected to the connector seat 2 through the main body connector 23, and the auxiliary tube body 3 is connected to the connector seat 2 through the auxiliary tube connector 22. The medicine flows into the liquid cavity 21 of the connector seat 2 through the auxiliary tube body 3 and then flows out through the main body 1. The auxiliary tube body 3 and the connector seat 2 are fixed by the fixing sleeve 5, and are simultaneously gathered by the limiting sleeve 4 to prevent the auxiliary tube body 3 from falling down due to excessive length, thereby affecting hygiene. When a small amount of medicine needs to be added, the doctor can use the clamping piece 9 to close the auxiliary tube body 3 that is being infused, then pull out the plug piece 81 to connect the needle tube to the infusion part 71, and then inject the medicine into the liquid cavity 21, and finally open the clamping piece 9 to continue the infusion. The operation is simple and time-saving.

[0037] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0038] Although the present invention uses more terms such as main body 1, infusion connector 11, protective sleeve 12, connector seat 2, liquid cavity 21, auxiliary tube connector 22, main tube connector 23, connecting hole 24, auxiliary tube body 3, needle seat 31, air tube 32, protective cover 33, limiting sleeve body 4, limiting hole 41, fixed sleeve body 5, fixing part 51, fixing hole 52, clamping part 53, clamping groove 54, infusion tube body 6, needle tube connecting assembly 7, infusion part 71, arc surface 72, infusion port 73, opening and closing assembly 8, plug 81, blocking column 82, extraction column 83, clamping member 9, clamping channel 91, through hole 92, movable part 93, positioning part 94, and protrusion 95, the possibility of using other terms is not excluded. The use of these terms is only for the purpose of more conveniently describing and explaining the essence of the utility model; interpreting them as any additional restrictions is contrary to the spirit of the utility model.

Claims

1. A multi-channel flow-stabilizing extension tube, comprising a main tube (1), one end of the main tube (1) being connected to a joint seat (2), and one end of the joint seat (2) being away from the main tube (1) being connected to a plurality of auxiliary tubes (3), characterized in that: The connector seat (2) is provided with at least one limiting sleeve (4) at one end close to the auxiliary tube body (3) so that the auxiliary tube bodies (3) can fit together and move axially along the length direction of the auxiliary tube body (3), and a fixing sleeve (5) is provided between the connector seat (2) and the auxiliary tube body (3). The connector seat (2) has a liquid cavity (21) on the inner side, and an infusion tube body (6) communicating with the liquid cavity (21) is provided on the circumferential outer side of the connector seat (2). The infusion tube body (6) is provided with a needle tube connection assembly (7) at one end away from the connector seat (2).

2. A multi-channel flow-stabilizing extension tube according to claim 1, characterized in that: One end of the joint seat (2) is provided with a plurality of auxiliary pipe connectors (22) extending axially outward, the auxiliary pipe bodies (3) are respectively sleeved on the outside of the auxiliary pipe connectors (22), and the end of the joint seat (2) away from the auxiliary pipe connectors (22) is provided with a main pipe connector (23), the main pipe body (1) is arranged on the main pipe connector (23), and the inner sides of the main pipe connector (23) and the auxiliary pipe connector (22) are both provided with connection holes (24) communicating with the liquid cavity (21).

3. A multi-channel flow-stabilizing extension tube according to claim 2, characterized in that: The fixing sleeve (5) has a fixing portion (51) at one end, and a plurality of fixing holes (52) are provided on the inner side of the fixing portion (51) in the circumferential direction. The auxiliary pipe connector (22) and the auxiliary pipe body (3) are both arranged on the inner side of the fixing holes (52) in the circumferential direction.

4. The multi-channel flow-stabilizing extension tube according to claim 3, characterized in that: The fixing sleeve (5) is provided with a clamping portion (53) at one end away from the fixing portion (51); the clamping portion (53) is provided with a clamping groove (54) on the inner side thereof which is axially recessed inward and communicates with the fixing hole (52); the clamping groove (54) is sleeved on the outer side of one end of the joint seat (2) close to the auxiliary pipe connector (22).

5. The multi-channel flow-stabilizing extension tube according to claim 3, characterized in that: The limiting sleeve (4) is of a columnar structure. A plurality of axially penetrating limiting holes (41) are provided on the inner side of the limiting sleeve (4) in the circumferential direction. The auxiliary tube body (3) corresponds to the limiting holes (41) one by one. The inner diameter of the limiting holes (41) is equal to the diameter of the auxiliary tube body (3), and the inner diameter of the limiting holes (41) is smaller than the inner diameter of the fixing hole (52).

6. A multi-channel flow-stabilizing extension tube according to claim 1 or 2 or 3 or 4 or 5, characterized in that: The needle tube connection assembly (7) comprises an infusion portion (71) arranged at an end of the infusion tube body (6) away from the connector seat (2); the end of the infusion portion (71) away from the infusion tube body (6) has an arcuate surface (72); the arcuate surface (72) is provided with an infusion port (73) communicating with the infusion tube body (6) on the inner side in the circumferential direction; and the end of the infusion portion (71) away from the infusion tube body (6) is provided with an opening and closing assembly (8).

7. The multi-channel flow-stabilizing extension tube according to claim 6, characterized in that: The opening and closing assembly (8) comprises a plug member (81) fitted with the arc surface (72), one end of the plug member (81) is provided with a plugging column (82) axially inserted into the infusion port (73), and the end of the plug member (81) away from the plugging column (82) is also provided with an extraction column (83).

8. The multi-channel flow-stabilizing extension tube according to claim 1, characterized in that: The auxiliary tube body (3) is provided with a needle seat (31) at one end away from the connector seat (2), an air tube (32) is provided on the circumferential outer side of the needle seat (31), a protective cover (33) is provided at the end of the needle seat (31), and a clamping member (9) sleeved on the outer side of the auxiliary tube body (3) is provided at one end of the needle seat (31) away from the protective cover (33).

9. The multi-channel flow-stabilizing extension tube according to claim 8, characterized in that: The clamping member (9) has a clamping channel (91) on its inner side, and through holes (92) connected to the clamping channel (91) are respectively provided at both ends of the clamping member (9), and the auxiliary tube body (3) axially penetrates into the clamping channel (91) through the through hole (92). The clamping member (9) has a movable portion (93) on one side and a positioning portion (94) on the other side, and the auxiliary tube body (3) is located between the movable portion (93) and the positioning portion (94), and a protrusion (95) abutting against the auxiliary tube body (3) is provided on the side corresponding to the movable portion (93) and the positioning portion (94).

10. The multi-channel flow-stabilizing extension tube according to claim 1, characterized in that: An infusion connector (11) is provided at one end of the main pipe body (1) away from the connector seat (2), and a protective sleeve (12) is provided at one end of the infusion connector (11) away from the main pipe body (1).

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