Liquid medicine dosing device

Abstract

The present invention relates to a quantitative injection device which can be mounted on a syringe and can quantitatively inject a medicine contained in the syringe by a user's pressing action. The medicine quantitative injection device according to the present invention can be operated by a user's single hand, can quantitatively inject a medicine in various areas, and has an effect of maximizing operability and convenience. In addition, in a non-hospital home, by the operation of a non-medical staff, it also has an effect of maximizing the efficiency of medicine delivery.

Description

Technical Field

[0001] This invention relates to a drug injection device, and more specifically, to a drug injection device capable of providing a variety of solutions, such as drugs and cosmetics, over a large area of ​​a target tissue by means of the user's operation. Background Technology

[0002] To specifically deliver drugs to tissues composed of thin structures like skin, the method of applying medication to the skin surface is widely used. However, this method results in low absorption rates, making it difficult to expect adequate therapeutic effects. To address this issue, a method of delivering drugs by penetrating the skin tissue using a short needle has recently been developed. Such prior art is disclosed in Korean Patent No. 1939061.

[0003] However, such existing technologies cannot meet the requirements for self-injection, such as in situations where convenience is extremely important, like injecting into one's own face. Summary of the Invention

[0004] Technical issues

[0005] To address the aforementioned problems, the present invention aims to provide a drug delivery device that maximizes convenience by delivering a fixed amount of drug to the skin with simple operation.

[0006] Technical solutions

[0007] As a solution to the aforementioned problem, a drug dispensing device can be provided, comprising: an upper housing having a first cavity extending vertically; a lower housing connected to the lower side of the upper housing having a second cavity extending vertically; a cap disposed on the upper side of the first cavity, at least a portion of which can reciprocate linearly within the first cavity; and a dispensing module that moves a predetermined distance downward each time the cap reciprocates vertically, thereby pushing the piston of the syringe.

[0008] On one hand, the quantitative movement module may include: a first push block that transmits and receives force from the lower end of the cover, thereby enabling it to move in a downward direction, and having a hollow portion formed in the vertical direction; and a push rod that extends to a predetermined length, thereby enabling it to be inserted into the hollow portion of the upper housing and the first push block, with one side being supported as the first push block moves in a downward direction, thereby enabling it to move a predetermined distance in a downward direction.

[0009] On the one hand, at least a portion of the lower part of the push rod can be inserted into the inside of the syringe.

[0010] Additionally, the lower end of the push rod can be inserted into the inside of the syringe, thereby pressurizing the syringe piston.

[0011] On one hand, the push rod may include a linear ratchet gear formed along the length direction on the side, and the first push block may include a first pawl engaging with the ratchet gear. The linear ratchet gear and the first pawl can move the push rod in a downward direction and restrict its movement in an upward direction.

[0012] On one hand, the first cavity also includes a second push block spaced a predetermined distance from the lower side of the first push block. The second push block may include: a hollow portion, which allows the push rod to be inserted in the vertical direction; and a second pawl, which engages with a linear ratchet gear, allowing the push rod to move in the downward direction.

[0013] On the one hand, it may also include: a first spring disposed between the cover and the first push block, and a second spring disposed between the first push block and the second push block.

[0014] On the one hand, it may also include: a guide ring having a hollow portion in the vertical direction, thereby enabling the insertion of the push rod, supporting the lower side of the second push block on one side, and being fixed in the first cavity on the other side.

[0015] On the one hand, when the first push block is pressed down by the cover, it can move to a position that is in close contact with the second push block. When it is not pressed, it can return to its original position by the second spring.

[0016] On the one hand, when the force is transmitted to the first push block in the downward direction through the cover, the first push block restricts the relative movement of the linear ratchet by the first pawl, and moves downward together with the push rod. The second pawl of the second push block allows the relative movement of the linear ratchet in the fixed position.

[0017] In addition, when the force acting on the first push block in the downward direction is released, the first push block moves upward through the second spring, and the relative movement of the linear ratchet is restricted by the second pawl of the second push block, while the relative movement of the linear ratchet is allowed by the first pawl of the first push block.

[0018] On the one hand, the push rod can have multiple linear ratchet gears, and the first pawl and the second pawl correspond to multiple linear ratchet gears.

[0019] On one hand, it may include a tip that can connect to the syringe needle adapter when the syringe is inserted into the second cavity.

[0020] Additionally, the tip includes an internal flow path that is in fluid communication with the needle adapter and multiple needles that are in fluid communication with the internal flow path and are spaced apart from each other. A portion of the lower end can protrude downward from below the tip.

[0021] The effects of the invention

[0022] The drug solution quantitative injection device according to the present invention has the advantages of single-handed operation, quantitative pumping and injection of drugs and various solutions on multiple areas, and maximizes operability and convenience.

[0023] Furthermore, even in non-hospital settings at home, the procedure can maximize drug delivery efficiency through the actions of non-medical personnel. Attached Figure Description

[0024] Figure 1 This is a front view of a drug dispensing device according to an embodiment of the present invention.

[0025] Figure 2 This is an exploded perspective view of a drug dispensing device according to an embodiment of the present invention.

[0026] Figure 3 This is a cross-sectional view of a drug solution metering injection device according to an embodiment of the present invention.

[0027] Figure 4 To enlarge Figure 3 Enlarged cross-sectional view of I.

[0028] Figure 5a , 5b Figure 5c shows the operational status of the propulsion block operated by the user.

[0029] Figure 6 A diagram illustrating the position of the piston as it moves through the repeated operation of the quantitative movement module.

[0030] Figure 7 A conceptual diagram illustrating the concept of resetting the position of the push rod.

[0031] Figure 8 This is a conceptual diagram illustrating the idea of ​​inserting a syringe into the lower housing.

[0032] Figure 9 A conceptual diagram illustrating the tightening action of the tip.

[0033] Figure 10 This is a diagram illustrating the usage state of a drug dispensing device according to an embodiment of the present invention.

[0034] Figure 11 This is another usage diagram of a drug dispensing device according to an embodiment of the present invention. Detailed Implementation

[0035] Hereinafter, a drug dispensing device according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the embodiments, the names of the constituent elements may be referred to by other names in the art. However, when they have functional similarities and identity, even modified embodiments can be considered as equivalent configurations. Furthermore, the reference numerals attached to the constituent elements are for ease of explanation, but the illustrated content in the drawings showing these reference numerals does not limit the constituent elements to the scope of the drawings. Similarly, even embodiments that modify the constituent parts in the drawings can be considered as equivalent configurations when there is functional similarity and identity. Additionally, according to the skill of those skilled in the art, descriptions of constituent elements that are considered essential to include will be omitted.

[0036] On the one hand, the following will be based on Figure 1 The vertical direction is defined based on the shown state, and the drug dispensing device is explained. That is, the explanation is based on the premise that the position of the cap, which will be described later, is the upper side and the position of the tip, which will be described later, is the lower side.

[0037] The following will refer to Figures 1 to 4 The configuration of a drug liquid metering injection device 1 according to an embodiment of the present invention will be described in detail.

[0038] Figure 1 This is a front view of a drug dispensing device 1 according to an embodiment of the present invention. Figure 2 This is an exploded perspective view of a drug dispensing device 1 according to an embodiment of the present invention. Figure 3 This is a cross-sectional view of a drug dispensing device 1 according to an embodiment of the present invention. Figure 4 To enlarge Figure 3 Enlarged cross-sectional view of I.

[0039] Reference Figures 1 to 4 According to one embodiment of the present invention, a drug dispensing device 1 can move a certain amount of liquid with a single reciprocating operation by the user, while simultaneously pressurizing the syringe 1000 loaded inside. That is, with a single operation, the piston 1200 of the syringe 1000 moves quantitatively, and as the piston 1200 moves inside the syringe 1000, a quantitative amount of various solutions such as drugs or cosmetics can flow out through the needle 510 at the tip 500. In other words, it can be configured in a pen shape and as a click-type pumping system for injecting drug solutions by clicking.

[0040] It may include an upper housing 100, a lower housing 200, a cover 300, a syringe 1000, a quantitative movement module 400, and a tip 500.

[0041] The upper housing 100 and the lower housing 200 have hollow sections formed in the vertical direction on their inner sides, and the hollow sections on the inner sides can house the syringe 1000 and the quantitative movement module 400.

[0042] The upper housing 100 and the lower housing 200 can be used together vertically and can be disassembled for inserting and removing the syringe 1000 and repositioning the push rod 410 (described later). The upper housing 100 and the lower housing 200 can be cylindrical to improve ease of use for the user.

[0043] The upper housing 100 is formed by extending a predetermined length in the vertical direction, and a first cavity 101 formed in the vertical direction is formed on its inner side, which may house a quantitative movement module 400 and a cover 300. A guide ring 440 may be provided on the lower side of the upper housing 100 to prevent the second push block 430 in the quantitative movement module 400 from disengaging downwards. The guide ring 440 prevents the second push block 430 (described later) from moving downwards and may form a hollow portion, allowing the push rod 410 to pass through its central portion.

[0044] The upper side of the upper housing 100 may have a cover support 110 to prevent the cover 300 from detaching. The cover support 110 may be formed to protrude a predetermined length toward the central axis within the first cavity 101. The cover support 110 may have an inner diameter through which one side of the cover 300 passes, but not through which the cover protrusion 310 described later passes. Therefore, the cover 300 is restricted from moving in the upper direction by a predetermined distance by the cover support 110.

[0045] The lower housing 200 is formed by extending a predetermined length in the vertical direction and can be fastened to the lower side of the upper housing 100. The lower housing 200 may form a second cavity 201 in the vertical direction. The interior of the second cavity 201 may be configured such that the syringe 1000 can be inserted from the upper side of the lower housing 200 toward the lower side.

[0046] The lower housing 200 may have a syringe support 210 protruding radially toward the second cavity 201 on its lower side. The syringe support 210 supports the lower side of the syringe 1000 when it is inserted into the second cavity 201. Furthermore, the syringe support 210 has a hole formed in its center, allowing the needle adapter 1100 of the syringe 1000 to be installed in the hole.

[0047] A cover 300 is provided on the upper side of the upper housing 100 and can be inserted into the first cavity 101 with at least a portion therein. The cover 300 can move vertically by a user's pressing action and is restricted from detaching upwards. The cover 300 can be inserted into the second cavity 201 in the upward direction, and the lower side of the cover 300 may have a cover protrusion 310 protruding in the radial direction, thereby enabling it to associate with the cover support 110. The cover 300 has a hollow portion formed in its center, into which the push rod 410 (described later) can be inserted vertically. Further details will follow. Figure 8 This will be explained in detail.

[0048] When the user presses the cap 300, the end of the quantitative movement module 400 can move downward a certain distance. At least a portion of the quantitative movement module 400 is disposed within the first cavity 101, and at least a portion can be in close contact with the piston 1200 inside the syringe 1000 installed in the second cavity 201.

[0049] The quantitative movement module 400 may include: a push rod 410, a first push block 420, a second push block 430, a first spring 450, and a second spring 460. The push rod 410 extends along its length and can move downwards with the support of the first push block 420 and the second push block 430.

[0050] The push rod 410 can be configured with an outer diameter capable of being inserted into the inner side of the cap 300, the second cavity 201, and the syringe 1000. The push rod 410 has at least one linear ratchet 411 on its side. As an example, the ratchet 411 can be positioned opposite to the side of the push rod 410. The ratchet 411 can determine the inclination of its teeth, such that movement via the first push block 420 and the second push block 430 is limited to a downward direction. As an example, the upper surface of each tooth of the ratchet 411 is horizontally oriented, and at least a portion of its lower surface is configured as an inclined surface that slopes downwards the further away from the center of the push rod 410.

[0051] The first push block 420 and the second push block 430 can be configured vertically, and the push rod 410 can be moved downward a certain distance by adjusting the interval between them. The first push block 420 may include a first pawl 421 that engages with the ratchet 411. The first pawl 421 extends from the upper side of the first push block 420 downward, and its lower end may have gear teeth facing the central axis in the vertical direction. The gear teeth of the first pawl 421 may be formed horizontally on the lower side, and at least a portion of the upper surface of the teeth may have an inclined surface that slopes downward closer to the central axis.

[0052] The second push block 430 may have a second pawl 431, similar to the first push block 420. The second pawl 431 is formed by extending a predetermined length from the upper side of the second push block 420 toward the lower side, and may have gear teeth. The direction of the gear teeth may also be the same as that of the first pawl 421.

[0053] The first pawl 421 and the second pawl 431 are made of elastic material, so that they can bend when the ratchet 411 disengages in the downward direction. The teeth of the ratchet 411 return to their original position after passing through the gear teeth of the first pawl 421 and the second pawl 431, so as to support the top of the passing ratchet 411 teeth.

[0054] The first spring 450 is located between the cover 300 and the first push block 420, and can provide an upward force so that the cover 300 moves downward and then returns to its original position.

[0055] The second spring 460 is located between the first push block 420 and the second push block 430, and can provide an upward force so that the first push block 420 moves downward and then returns to its original position.

[0056] On the one hand, the inner sides of the aforementioned first push block 420, second push block 430, first spring 450 and second spring 460 can be equipped with spaces for inserting the push rod 410.

[0057] The tip 500 may be provided on the lower side of the lower housing 200 and detachably provided with the syringe support 210. The upper side of the tip 500 may be connected to the syringe support 210 and fluidly communicate with the needle adapter 1100 of the syringe 1000. The end of the tip 500 may be provided with a plurality of needles 510 protruding a predetermined length from the end face. The interior of the tip 500 may have an internal flow path, thereby allowing the needle adapter 1100 of the syringe 1000 and the plurality of needles 510 to be fluidly communicated respectively. Therefore, the liquid medicine flowing out of the syringe 1000 under pressure can be discharged through the plurality of needles 510. On the other hand, the upper end of the tip may be tightly attached to and fixed to the lower side of the syringe support 210 on the outside, and the inner surface may be configured to allow the needle adapter 1100 to be inserted. At this point, depending on the inner diameter of the upper end of the tip, a needle equipped with a needle adapter 1100 having various outer diameters can be used, and a needle equipped with a needle adapter having a smaller outer diameter can also be used without changing the structure. On the other hand, the connection structure between the upper end of the tip and the syringe support 210 can be constructed using various known structural modifications.

[0058] The protruding length of the multiple needles 510 can be determined by the length to which the needles 510 can be inserted into the skin when the lower end face of the tip 500 is in close contact with the skin surface. Preferably, the protruding length of the multiple needles 510 can be within 2 mm.

[0059] On the one hand, the tip can be equipped with various types of needles. Depending on the type of needle, the tip can perform functions such as drug injection and skin stimulation. Specifically, depending on the type of needle, the tip can reach the skin surface, the superficial layer, the epidermis layer, and the targeting skin layer, and can stimulate tissue and / or inject various solutions such as drugs.

[0060] Refer to Figure 3 and Figure 4 The cover 300 and the first propulsion block 420, the first propulsion block 420 and the second propulsion block 430 can be provided at a distance set in the vertical direction.

[0061] In particular, the vertical distance between the first push block 420 and the second push block 430 can be determined by the distance that the user needs to move in a single pressing action. As an example, the distance can be the length of two ratchet gears 411. On the other hand, the number of the first pawl 421 and the second pawl 431 can be determined by the corresponding number of ratchet gears 411 provided on the push rod 410.

[0062] The following will refer to Figure 5a , 5b The operation of the quantitative movement module 400 is described in detail in sections 5c and 5c.

[0063] Figure 5a , 5b Figure 5c shows the operating status of the push block based on the user's operation.

[0064] First refer to Figure 5a , as reference Figure 4 As described, the cover 300 is located above the first push block 420 and is supported by the first spring 450, and can be positioned at the uppermost position in the first cavity 101. The lower side of the second push block 430 is supported by the guide ring 440, which can restrict its movement in the downward direction. The first push block 420 can be located between the cover 300 and the second push block 430, supported on the upper side by the first spring 450 and on the lower side by the second spring 460.

[0065] In standby mode, the first push block 420 and the second push block 430 can be configured to be spaced apart by the second spring 460. The spacing, as previously described, can be determined by the length of the push rod that the user needs to lower in a single push motion.

[0066] Next, refer to Figure 5bWhen the user presses the cover 300 downwards, the cover 300 descends and presses against the first push block 420, thus transmitting force. The first push block 420 also moves downwards and presses against the upper side of the second push block 430. At this time, the ratchet 411 is supported by the first pawl 421 of the first push block 420, and the push rod 410 moves downwards together with the first push block 420.

[0067] Next, refer to Figure 5c When the user releases the pressure, the first push block 420 moves upward via the second spring 460. At this time, the ratchet 411 is supported by the second pawl 431 of the second push block 430, and the push rod 410 is restricted from moving upward. Only the first push block 420 moves upward. The first pawl 421 of the first push block 420 moves upward relative to the ratchet 411.

[0068] On one hand, the cover 300 moves away from the second push block 430 via the second spring 460, and its upward movement is restricted by the cover support 110, moving to the position where... Figure 5a The initial position is shown.

[0069] Ultimately, through Figures 5a to 5c In one cycle, the push rod 410 moves downward at a set distance, and the cover 300, the first push block 420, and the second push block 430 return to their initial positions.

[0070] Figure 6 This diagram illustrates the position of the piston 1200, which is moved by the repeated operation of the quantitative movement module 400.

[0071] Through the aforementioned Figures 5a to 5c In this process, the push rod 410 descends a certain distance with each press. On one hand, the lower end of the push rod 410 supports the piston 1200 of the syringe 1000, allowing the user to inject a measured amount of medication with a single press. This action is repeated, supplying a certain amount of medication with each press, and the user can repeat the pressing action until all the medication contained in the syringe 1000 is used. On the other hand, the distance the push rod 410 moves with each press can be determined by the size of the teeth of the ratchet 411. That is, when the vertical length of the ratchet 411 teeth is larger, the unit distance moved with each press can be increased, and the amount of medication injected can also be increased. Furthermore, the distance the push rod moves with each press can be determined by the initially set interval between the first push block 420 and the second push block 430. That is, the amount of medication injected can be adjusted according to the distance the first push block 420 descends with each press.

[0072] The following will refer to Figures 7 to 9The preparation process performed by the user in order to use the drug dispensing device according to the present invention will be described.

[0073] Figure 7 A conceptual diagram illustrating the concept of resetting the position of push rod 410.

[0074] As previously described, the push rod 410 is only allowed to move downwards via the operation of the first push block 420 and the second push block 430. Therefore, due to the user's repeated pressing action, the ratchet 411 will not move further when it disengages from the first pawl 421 of the first push block.

[0075] Therefore, the user disassembles the upper housing 100 and the lower housing, and pulls the push rod 410 downward from the upper housing 100. Then, while maintaining the direction of the push rod 410, the user aligns it with the hollow portion formed in the cover 300 and pushes it downward. At this time, the ratchet 411 of the push rod 410 can be pushed into the position where it engages with the first pawl 421 and the second pawl 431 to complete the reset. Therefore, the user can reset the position of the push rod, replace the syringe, and then use the drug dispensing device. On the other hand, for the convenience of the user, the vertical length of the cover 300 can be set such that when the upper end of the push rod 410 is aligned with the upper end of the cover 300, the ratchet 411 of the push rod 410 can engage with the second pawl 431.

[0076] Figure 8 This is a conceptual diagram illustrating the insertion of the syringe 1000 into the lower housing 200. (Refer to...) Figure 8 The user installs the syringe 1000 containing the medicine into the second cavity 201. At this time, the syringe 1000 is prevented from detaching in the downward direction by means of the syringe support 210 provided on the lower side of the lower housing 200.

[0077] Figure 9 A conceptual diagram illustrating the fastening action of tip 500.

[0078] Reference Figure 9 After the user installs the syringe 1000 into the second cavity 201, the upper housing 100 and the lower housing 200 can be fastened to complete the preparation for use. When fastening the upper housing 100 and the lower housing 200, the user needs to align and tighten them with the lower end of the push rod 410 inside the syringe 1000. Preferably, the push rod 410 is reset and tightened after being placed on the upper housing 100.

[0079] The following will refer to Figure 10 and Figure 11 The use of the drug solution metering injection device 1 according to the present invention will be described.

[0080] Figure 10 This is a diagram showing the usage state of a drug solution metering injection device 1 according to an embodiment of the present invention.

[0081] Reference Figure 10 According to the present invention, the drug dispensing device 1 can perform a single injection action by the user's pressing action. Then, the user can move the drug dispensing device 1 to another position and perform another injection action by pressing. Then again, the user can move the drug dispensing device 1 to another position and perform another injection action by pressing. Finally, the user can use a syringe 1000 to provide a quantitative drug supply to a large treatment area. Although an example of performing a single pressing action at each injection position is shown with reference to the accompanying drawings, this is only an example. The user can perform multiple pressing operations at one position and adjust the injection volume according to the required drug volume. In this case, the total amount of drug delivered can also be controlled by multiplying the amount of drug determined in one pressing action by the number of pressing actions.

[0082] Figure 11 This is another usage state diagram of the drug liquid metering injection device 1 according to an embodiment of the present invention.

[0083] As shown in the figure, the medication dispensing device 1 according to an embodiment of the present invention can be configured in the shape of a pen, so that it can be held and operated with one hand. The user can press the cap 300 with their thumb while holding the medication dispensing device 1 and inject the medication. Alternatively, in situations where medication needs to be injected evenly over a large area, such as the face, the user can move to another location while holding the medication dispensing device 1 with one hand and press the cap 300 to inject the medication, repeating the same process when moving to other locations.

[0084] As mentioned above, the drug injection device according to the present invention allows the user to operate with one hand and inject drugs quantitatively in multiple areas, thus maximizing operability and convenience.

[0085] Moreover, in non-hospital homes, the operation by non-medical personnel can also maximize the efficiency of drug delivery.

Claims

1. A drug solution metering injection device, the drug solution metering injection device comprising: The upper shell has a first cavity that extends vertically. The lower housing is connected to the lower side of the upper housing and forms a second cavity that extends through the vertical direction; The cover is disposed on the upper side of the first cavity, and at least a portion of it is capable of linear reciprocating motion on the first cavity; as well as The quantitative movement module moves a preset distance downwards each time the cap reciprocates in the up-down direction, thereby pushing the syringe piston. The quantitative movement module includes: A first push block, which receives force from the lower end of the cover, thereby enabling it to move downwards, and has a hollow portion formed along the vertical direction; and The push rod is formed by extending a predetermined length so that it can be inserted into the hollow portion of the upper housing and the first push block. One side is supported as the first push block moves downward, thereby allowing it to move a predetermined distance downward. At least a portion of the lower part of the push rod can be inserted into the inside of the syringe. The push rod includes a linear ratchet formed along its length on the side. The first propulsion block includes a first pawl that meshes with the linear ratchet. The linear ratchet and the first pawl cause the push rod to move downwards and restrict its movement upwards. The first cavity also includes a second propulsion block spaced a predetermined distance from the lower side of the first propulsion block. The second propulsion block includes: a hollow portion that allows the propulsion rod to be inserted vertically; and a second pawl that engages with the linear ratchet gear, allowing the propulsion rod to move downwards. This also includes: A first spring, which is provided between the cover and the first push block; and A second spring is provided between the first propulsion block and the second propulsion block.

2. The drug solution metering injection device according to claim 1, wherein, The lower end of the push rod is inserted into the inside of the syringe, which can pressurize the piston of the syringe.

3. The drug solution metering injection device according to claim 1, wherein, Also includes: The guide ring has a hollow portion in the vertical direction, which allows the push rod to be inserted. One side supports the lower side of the second push block, and the other side can be fixed in the first cavity.

4. The drug solution metering injection device according to claim 3, wherein, When the first push block is pressed downward through the cover, it can move to a position that is in close contact with the second push block. When it is not pressed, it returns to its original position by the second spring.

5. The drug solution metering injection device according to claim 4, wherein, When the cover transmits a downward force to the first push block, the first push block restricts the relative movement of the linear ratchet gear via the first pawl, and simultaneously moves downward together with the push rod. With the second pawl of the second propulsion block in a fixed position, relative movement of the linear ratchet is permitted.

6. The drug solution metering injection device according to claim 5, wherein, When the force acting on the first propulsion block in the downward direction is released, the first propulsion block moves upward via the second spring. The relative movement of the linear ratchet is restricted by the second pawl of the second propulsion block. The first pawl of the first propulsion block allows relative movement of the linear ratchet.

7. The drug solution metering injection device according to claim 1, wherein, The push rod has a plurality of the linear ratchet gears. The first pawl and the second pawl correspond to a plurality of linear ratchet gears.

8. The drug solution metering injection device according to claim 7, wherein, include: The tip is capable of connecting to the syringe needle adapter when the syringe is inserted into the second cavity.

9. The drug solution metering injection device according to claim 8, wherein, The tip includes an internal flow path and a plurality of needles, which are in fluid communication with the needle adapter. The plurality of needles can be fluidly connected to the internal flow path, respectively. Alternately spaced configuration A portion of the lower end protrudes downward from below the tip.

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