CN221242883U - A multifunctional blood collection needle - Google Patents

Abstract

The application relates to the technical field of medical instruments, in particular to a multifunctional blood taking needle. The multifunctional blood taking needle comprises a puncture part and a blood taking part, wherein the puncture part comprises a puncture needle and a first outer sleeve, and the puncture needle is movably arranged in the first outer sleeve along the length direction of the first outer sleeve; the blood sampling part comprises a blood sampling needle and a second outer sleeve, and the blood sampling needle is movably arranged in the second outer sleeve along the length direction of the second outer sleeve; the blood taking needle is characterized in that a hose is connected between the blood taking needle and the puncture needle, a first outlet is formed in one end, far away from the hose, of the first outer sleeve, and a second outlet is formed in one end, far away from the hose, of the second outer sleeve. The embodiment of the application provides a multifunctional blood taking needle, which solves the problems that after blood taking is finished in the related technology, the puncture needle and the needle head of the blood taking needle are exposed, and blood leakage and needle puncture are easy to occur.

Description

A multifunctional blood collection needle

Technical Field

The present application relates to the technical field of medical devices, and in particular to a multifunctional blood collection needle.

Background technique

Blood collection needles are widely used to collect blood samples during medical examinations. Existing blood collection needles have great deficiencies in actual use, mainly due to poor safety. For example, after medical workers draw blood from patients, the puncture needle tip and the tail of the blood collection needle are all exposed. For new employees and interns, the risk of needlestick injuries is relatively high. On the other hand, after the blood collection is completed and the needle is removed, blood is easily leaked from the needle tip, which poses a risk of blood infection. In the case of needing to collect blood from multiple blood collection tubes, when replacing blood collection tubes, if the blood collection tube is folded back, needlestick injuries are likely to occur, and if the blood collection tube is not folded back, blood leakage is likely to occur.

Utility Model Content

The embodiment of the present application provides a multifunctional blood collection needle to solve the problem in the related art that after blood collection, the needles of the puncture needle and the blood collection needle are exposed, which may easily cause blood leakage and needle stick injuries.

In order to achieve the above objectives, the present application provides a multifunctional blood collection needle, which includes:

The puncture part comprises a puncture needle and a first outer sleeve, wherein the puncture needle is movably arranged in the first outer sleeve along the length direction of the first outer sleeve;

The blood collection part comprises a blood collection needle and a second outer sleeve, wherein the blood collection needle is movably arranged in the second outer sleeve along the length direction of the second outer sleeve;

A hose is connected between the blood collection needle and the puncture needle, a first outlet is provided at one end of the first outer sleeve away from the hose, and a second outlet is provided at one end of the second outer sleeve away from the hose.

In some embodiments, a movement groove is formed on the first outer sleeve along the length direction of the first outer sleeve, and the movement groove includes a first port away from the blood collection part and a second port close to the blood collection part;

The puncture needle is connected to a first pusher, which passes through the movement groove and is slidably arranged in the first outer sleeve. The first pusher is configured so that when the first pusher is pushed to the first port, the puncture needle is located outside the first outer sleeve, and when the first pusher is pushed to the second port, the puncture needle is located in the first outer sleeve.

In some embodiments, it also includes:

The pusher card slot is arranged on one end of the first outer sleeve close to the first outlet, and the first pusher is configured so that when the first pusher is pushed to the first port, the first pusher is engaged in the pusher card slot.

In some embodiments, it also includes:

A connector connected to the first outlet of the first outer sleeve, the connector having a diameter of 1.04 mm and used for connecting to a venous catheter;

The piston is arranged in the first outer sleeve and connected with the first thruster.

In some embodiments, a first pusher is slidably provided on the inner wall of the first outer sleeve, the first pusher is fixedly connected to the end of the puncture needle facing the blood collection part, and a first retractor is provided at the end of the first outer sleeve away from the first outlet, and the hose is connected to the first outer sleeve through the first retractor.

In some embodiments, a first pusher is provided on the inner wall of the first outer sleeve, the first pusher is fixedly connected to the inner wall of the first outer sleeve, the first pusher is slidably arranged on the outer wall of the puncture needle, a first telescopic device is provided at one end of the first outer sleeve away from the first outlet, and the hose is connected to the first outer sleeve through the first telescopic device.

In some embodiments, wings are provided on the outer wall of the first outer sleeve.

In some embodiments, the length of the first outer sleeve is greater than the length of the puncture needle.

In some embodiments, it also includes:

An adhesive sheet is arranged at one end of the first outer sleeve away from the blood collection part.

In some embodiments, a second retractor is disposed at one end of the second outer sleeve away from the second outlet, and the hose is movably connected to the second outer sleeve via the second retractor;

The second outer sleeve is provided with a second pusher.

The beneficial effects of the technical solution provided by this application include:

The embodiment of the present application provides a multifunctional blood collection needle. Since a movable first outer sleeve is sleeved on the puncture needle, the puncture needle can move along the length direction of the first outer sleeve and emerge from the first outlet to complete the puncture action. After the blood collection is completed, the puncture needle is retracted into the first outer sleeve to avoid exposure of the puncture needle.

At the same time, a movable second outer sleeve is sleeved on the blood collection needle, and the blood collection needle can move along the length direction of the second outer sleeve and emerge from the second outlet to complete the blood collection action. After the blood collection is completed, the blood collection needle is retracted into the second outer sleeve to avoid exposure of the blood collection needle. A hose is connected between the blood collection needle and the puncture needle to complete the blood transmission from the blood collected by the puncture needle to the blood collection needle. Therefore, it can solve the problem in the related art that after the blood collection is completed, the needles of the puncture needle and the blood collection needle are exposed, which is prone to blood leakage and needlestick injuries.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

FIG1 is a schematic diagram of the structure of a multifunctional blood collection needle provided in an embodiment of the present application;

FIG2 is a schematic diagram of the structure of the puncture portion provided in an embodiment of the present application;

FIG3 is a schematic diagram of the structure of the blood collection part provided in an embodiment of the present application.

In the figure: 1. hose; 2. puncture part; 3. blood collection part; 4. first outer sleeve; 41. first outlet; 42. first pusher; 43. first telescopic device; 44. pusher slot; 45. wing; 5. puncture needle; 6. second outer sleeve; 61. second outlet; 62. second pusher; 63. second telescopic device; 7. blood collection needle; 8. connector; 9. adhesive sheet; 10. piston.

Detailed ways

In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

The embodiment of the present application provides a multifunctional blood collection needle, which can solve the problem in the related art that after blood collection, the needle tips of the puncture needle and the blood collection needle are exposed, which is prone to blood leakage and needlestick injuries.

Referring to Figures 1 to 3, an embodiment of the present application provides a multifunctional blood collection needle, which includes a puncture part 2 and a blood collection part 3, wherein the puncture part 2 includes a puncture needle 5 and a first outer sleeve 4, and the puncture needle 5 is movably arranged in the first outer sleeve 4 along the length direction of the first outer sleeve 4; the blood collection part 3 includes a blood collection needle 7 and a second outer sleeve 6, and the blood collection needle 7 is movably arranged in the second outer sleeve 6 along the length direction of the second outer sleeve 6.

Further, as shown in FIG1 , a hose 1 is connected between the blood collection needle 7 and the puncture needle 5, a first outlet 41 is provided at one end of the first outer sleeve 4 away from the hose 1, and a second outlet 61 is provided at one end of the second outer sleeve 6 away from the hose 1; when puncture is required, the first outer sleeve 4 is slid toward the side where the blood collection part 3 is located, so that the puncture needle 5 is exposed from the first outlet 41, and the blood vessel can be punctured. After the puncture is completed, the first outer sleeve 4 is slid toward the side away from the blood collection part 3, that is, the puncture needle 5 is protected in the first outer sleeve 4 to prevent the risk of needle sticking. Similarly, when collecting blood, the second outer sleeve 6 is slid until the blood collection needle 7 is exposed from the second outer sleeve 6, that is, the blood collection needle 7 is connected to the blood collection tube, and blood is collected.

Furthermore, the length of the first outer sleeve 4 should be greater than the length of the puncture needle 5 to avoid difficulty in accommodating the puncture needle 5 .

The multifunctional blood collection needle provided in the embodiment of the present application has a movable first outer sleeve 4 sleeved on the puncture needle 5, so that the puncture needle 5 can move along the length direction of the first outer sleeve 4 and emerge from the first outlet 41 to complete the puncture action. After the blood collection is completed, the puncture needle 5 is retracted into the first outer sleeve 4 to avoid exposure of the puncture needle 5.

At the same time, a movable second outer sleeve 6 is sleeved on the blood collection needle 7, and the blood collection needle 7 can move along the length direction of the second outer sleeve 6 and emerge from the second outlet 61 to complete the blood collection action. After the blood collection is completed, the blood collection needle 7 is retracted into the second outer sleeve 6 to avoid exposure of the blood collection needle 7. A hose 1 is connected between the blood collection needle 7 and the puncture needle 5 to complete the blood transmission from the blood collected by the puncture needle 5 to the blood collection needle 7. Therefore, it can solve the problem in the related art that after the blood collection is completed, the needles of the puncture needle 5 and the blood collection needle 7 are exposed, which is prone to blood leakage and needle stick injuries.

In some optional embodiments, as shown in Figure 1, a movement groove is opened on the first outer sleeve 4 along the length direction of the first outer sleeve 4, and the movement groove includes a first port away from the blood collection part 3 and a second port close to the blood collection part 3; as shown in Figures 1 and 2, the puncture needle 5 is connected to the first pusher 42, and specifically the first pusher 42 can be wrapped around the circumference of the puncture needle 5; further, the first pusher 42 is arranged through the movement groove and along the length direction of the movement groove, so that the puncture needle 5 is slidable in the first outer sleeve 4.

Specifically, the first pusher 42 has two extreme positions, namely the first port and the second port of the moving groove. When the first pusher 42 is pushed to the first port, the puncture needle 5 is located outside the first outer sleeve 4. When the first pusher 42 is pushed to the second port, the puncture needle 5 is located in the first outer sleeve 4, so that the puncture needle 5 is exposed during blood collection and the puncture needle 5 is housed in the first outer sleeve 4 after blood collection.

It should be noted that when the puncture needle 5 is exposed, at least the needle tip of the puncture needle 5 is exposed. Preferably, when the first pusher 42 is pushed to the first port, the entire puncture needle 5 is located outside the first outlet 41 to prevent the first outer sleeve 4 from affecting the puncture of the puncture needle 5 during puncture.

Optionally, the first pusher 42 is connected to a wing 45 , and the wing 45 is slidably arranged in the motion groove, and the first pusher 42 can be slid along the puncture needle 5 by pushing the wing 45 , thereby realizing the sliding of the puncture needle 5 in the first outer sleeve 4 .

Optionally, as shown in FIG. 1 and FIG. 2 , a pusher card slot 44 is provided in the first outer sleeve 4, and the pusher card slot 44 is located in the inner wall of the first outer sleeve 4 and at one end close to the first outlet 41. When the first pusher 42 is pushed to the first port, the first pusher 42 is engaged in the pusher card slot 44 to prevent the puncture needle 5 from retreating during puncture. Specifically, when collecting arterial blood, the puncture needle 5 punctures the artery, and the blood collection needle 7 is connected to the arterial blood collector to complete arterial blood collection.

Optionally, referring to Figures 1 and 2, the multifunctional blood collection needle also includes a connector 8 and a piston 10, wherein the connector 8 is connected to the first outlet 41 of the first outer sleeve 4, and the diameter of the connector 8 is smaller than the diameter of the first outlet 41, and is used to connect to the intravenous catheter; the piston 10 is arranged in the first outer sleeve 4 and is connected to the first pusher 42, and can slide in the first outer sleeve 4 as the first pusher 42 slides.

Specifically, the connector 8 is designed to collect catheter blood. The connector 8 is connected to the venous catheter connector. By pushing the piston 10 in a direction away from the first outlet 41, a negative pressure is formed on the connector 8 connected to the venous catheter, so that blood is drawn back. The collected catheter blood is transferred to the blood collection needle 7 through the hose 1, the front end blood is discarded, and the blood collection needle 7 is directly inserted into the blood culture bottle to achieve the collection of catheter blood.

In some optional embodiments, as shown in FIG. 1 and FIG. 2 , a first pusher 42 is slidably provided on the inner wall of the first outer sleeve 4, the first pusher 42 is fixedly connected to the outer wall of the puncture needle 5, and is located at one end of the puncture needle 5 close to the blood collection part 3, and a first retractor 43 is provided at one end of the first outer sleeve 4 away from the first outlet 41, and the hose 1 is connected to the first outer sleeve 4 through the first retractor 43. When the puncture needle 5 is received in the first outer sleeve 4, the first retractor 43 is in an extended state, that is, the hose 1 is connected to the puncture needle 5, and one end of the first retractor 43 is provided on the first outer sleeve 4, and the other end is provided on the hose 1;

When the first pusher 42 pushes the puncture needle 5 to extend and retract in the first outer sleeve 4, the first retractor 43 retracts and retracts synchronously with the movement of the puncture needle 5, that is, the first pusher 42 slides along the motion groove, and when the puncture needle 5 is exposed from the first outlet 41, the first retractor 43 is compressed; when the puncture needle 5 is retracted into the first outlet 41, the first retractor 43 is stretched.

Furthermore, the first pusher 42 is connected with a wing 45, which is slidably arranged in the motion groove. The first pusher 42 can be slidably moved in the motion groove by pushing the wing 45. During puncture, the wing 45 and the first outer sleeve 4 are held to achieve relative fixation of the wing 45 (together with the puncture needle 5) and the first outer sleeve 4 to prevent the puncture needle 5 from retracting.

Regarding the setting method of the first retractor 43, the present application also provides another embodiment, that is, the first pusher 42 is fixedly connected to the inner wall of the first outer sleeve 4, and the first retractor 43 is set at the end of the first outer sleeve 4 away from the first outlet 41, and the first outer sleeve 4 is connected to the hose 1 through the first retractor 43. As shown in Figure 1, the first pusher 42 is slid together with the first outer sleeve 4 toward the side where the blood collection part 3 is located, and the first retractor 43 is compressed to expose the puncture needle 5; the first pusher 42 is slid together with the first outer sleeve 4 toward the side away from the blood collection part 3, and the first retractor 43 is stretched synchronously, and the puncture needle 5 is received in the first outer sleeve 4.

Furthermore, a wing 45 is provided on the outer wall of the first outer sleeve 4. When the puncture needle 5 is punctured, the first pusher 42 is clamped in the pusher clamping slot 44 to prevent the puncture needle 5 from retracting, and the wing 45 can be held to facilitate the puncture.

Specifically, the first telescopic device 43 can be a threaded tube structure, or other structures capable of realizing telescopic action. Also, the present application preferably adopts an embodiment in which the first forward pusher 42 is fixed to the inner wall of the first outer sleeve 4, in which case the puncture needle 5 can slide along the length direction of the first outer sleeve 4 and will not be affected by the forward pusher during puncture.

In some optional embodiments, as shown in FIG. 1 and FIG. 2 , the multifunctional blood collection needle further includes an adhesive sheet 9, which is arranged at one end of the first outer sleeve 4 away from the blood collection part 3. Since the needle handle of the puncture needle 5 needs to be fixed with adhesive tape after the puncture is successful, on the one hand, additional adhesive tape needs to be taken, and on the other hand, some nurses with weak protection awareness will ignore the importance of adhesive tape fixation due to cumbersome operations, increasing the risk of needlestick injuries. Therefore, the adhesive sheet 9 is arranged on the multifunctional blood collection needle, and the puncture needle 5 is directly fixed on the skin of the punctured person with the adhesive sheet 9.

In some optional embodiments, as shown in Figures 1 and 3, a second telescopic device 63 is provided at one end of the second outer sleeve 6 away from the second outlet 61, and the hose 1 is movably connected to the second outer sleeve 6 through the second telescopic device 63; at the same time, a second thruster 62 is provided on the second outer sleeve 6.

Similar to the first pusher 42 and the first retractor 43 of the puncture part 2, the blood collection part 3 is preferably an embodiment in which the second pusher 62 is fixed to the inner wall of the second outer sleeve 6 to avoid the pusher affecting the needle tube insertion.

Specifically, the second pusher 62 is fixedly connected to the inner wall of the second outer sleeve 6, and a second retractor 63 is arranged at the end of the second outer sleeve 6 away from the first outlet 41. The second outer sleeve 6 and the hose 1 are connected via the first and second retractors 63. As shown in FIG. 1 , the second pusher 62 is slid together with the second outer sleeve 6 toward the side where the blood collection part 3 is located, and the second retractor 63 is compressed to expose the puncture needle 5; the second pusher 62 is slid together with the second outer sleeve 6 toward the side away from the blood collection part 3, and the second retractor 63 is stretched synchronously, and the puncture needle 5 is received in the second outer sleeve 6.

Optionally, the diameter of the end of the second outer sleeve 6 away from the puncture portion 2 is larger than the diameter of the end close to the puncture portion 2, and the diameter of the end of the second outer sleeve 6 away from the puncture portion 2 is larger than the opening diameter of the blood collection catheter. The opening of the blood collection catheter can be accommodated in the second outer sleeve 6 to avoid accidental pricking of the finger. Furthermore, the length of the second outer sleeve 6 is larger than the length of the blood collection needle 7 to completely accommodate the blood collection needle 7.

In some optional embodiments, as shown in FIG. 1 to FIG. 3 , the puncture needle 5 is a single-bevel needle, and the blood collection needle 7 is a double-bevel needle.

The embodiment of the present application provides a multifunctional blood collection needle, which has the following advantages:

(1) By respectively arranging the first outer sleeve 4 and the second outer sleeve 6 on the puncture needle 5 and the blood collection needle 7, when puncture is required, the first outer sleeve 4 is slid toward the side where the blood collection part 3 is located, so that the puncture needle 5 is exposed from the first outlet 41, and the blood vessel can be punctured. After the puncture is completed, the first outer sleeve 4 is slid toward the side away from the blood collection part 3, that is, the puncture needle 5 is protected in the first outer sleeve 4 to prevent the risk of needle sticking; similarly, when collecting blood, the second outer sleeve 6 is slid until the blood collection needle 7 is exposed from the second outer sleeve 6, that is, the blood collection needle 7 is connected to the blood collection tube, and blood is collected, which can reduce the risk of puncture;

(2) When multiple blood collection tubes are used to collect blood and the blood collection tubes need to be replaced, the blood collection needle 7 can be accommodated in the second outer sleeve 6 by pushing the second outer sleeve 6, thereby preventing blood from leaking out;

(3) When collecting arterial blood, the puncture needle 5 can be used to puncture the artery, and the blood collection needle 7 can be connected to the arterial blood collection device to complete the arterial blood collection;

(4) When collecting catheter blood, the connector 8 is connected to the venous catheter, and the piston 10 is pushed in a direction away from the first outlet 41, thereby forming a negative pressure on the connector 8 connected to the venous catheter, so that the blood is drawn back through the hose 1 to transfer the collected catheter blood to the blood collection needle 7, the front end blood is discarded, and the blood collection needle 7 is directly inserted into the blood culture bottle to achieve the collection of catheter blood.

In the description of the present application, it should be noted that the terms "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

It should be noted that, in this application, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims (10)

1. A multifunctional blood collection needle, characterized in that it comprises: The puncture part (2) comprises a puncture needle (5) and a first outer sleeve (4), wherein the puncture needle (5) is movably arranged in the first outer sleeve (4) along the length direction of the first outer sleeve (4); The blood collection part (3) comprises a blood collection needle (7) and a second outer sleeve (6), wherein the blood collection needle (7) is movably arranged in the second outer sleeve (6) along the length direction of the second outer sleeve (6); A hose (1) is connected between the blood collection needle (7) and the puncture needle (5); a first outlet (41) is provided at one end of the first outer sleeve (4) away from the hose (1); and a second outlet (61) is provided at one end of the second outer sleeve (6) away from the hose (1). 2. The multifunctional blood collection needle according to claim 1, characterized in that: A movement groove is provided on the first outer sleeve (4) along the length direction of the first outer sleeve (4), and the movement groove comprises a first port away from the blood collection part (3) and a second port close to the blood collection part (3); The puncture needle (5) is connected to a first pusher (42), which passes through the movement groove and is slidably arranged in the first outer sleeve (4). The first pusher (42) is configured such that when the first pusher (42) is pushed to the first port, the puncture needle (5) is located outside the first outer sleeve (4), and when the first pusher (42) is pushed to the second port, the puncture needle (5) is located in the first outer sleeve (4). 3. The multifunctional blood collection needle according to claim 2, characterized in that it also includes: A pusher slot (44) is provided on one end of the first outer sleeve (4) close to the first outlet (41), and the first pusher (42) is configured such that when the first pusher (42) is pushed to the first port, the first pusher (42) is engaged in the pusher slot (44). 4. The multifunctional blood collection needle according to claim 2, characterized in that it also includes: A connector (8) connected to the first outlet (41) of the first outer sleeve (4), the connector (8) having a diameter of 1.1 mm and used for connecting to a venous catheter; The piston (10) is arranged in the first outer sleeve (4) and is connected to the first thruster (42). 5. The multifunctional blood collection needle according to claim 1, characterized in that: A first pusher (42) is slidably provided on the inner wall of the first outer sleeve (4), and the first pusher (42) is fixedly connected to the end of the puncture needle (5) facing the blood collection part (3), and a first telescopic device (43) is provided at the end of the first outer sleeve (4) away from the first outlet (41), and the hose (1) is connected to the first outer sleeve (4) via the first telescopic device (43). 6. The multifunctional blood collection needle according to claim 1, characterized in that: A first pusher (42) is arranged on the inner wall of the first outer sleeve (4), the first pusher (42) is fixedly connected to the inner wall of the first outer sleeve (4), the first pusher (42) is slidably arranged on the outer wall of the puncture needle (5), a first telescopic device (43) is arranged at one end of the first outer sleeve (4) away from the first outlet (41), and the hose (1) is connected to the first outer sleeve (4) via the first telescopic device (43). 7. The multifunctional blood collection needle according to claim 6, characterized in that: A wing (45) is provided on the outer wall of the first outer sleeve (4). 8. The multifunctional blood collection needle according to claim 1, characterized in that: The length of the first outer sleeve (4) is greater than the length of the puncture needle (5). 9. The multifunctional blood collection needle according to claim 1, further comprising: An adhesive sheet (9) is arranged on an end of the first outer sleeve (4) away from the blood collection part (3). 10. The multifunctional blood collection needle according to claim 1, characterized in that: A second retractor (63) is provided at one end of the second outer sleeve (6) away from the second outlet (61), and the hose (1) is movably connected to the second outer sleeve (6) via the second retractor (63); The second outer sleeve (6) is provided with a second pusher (62).