TWM513033U - Needle-free dosing device - Google Patents

Description

Needle-free dosing device

This creation department is related to the administration of intravenous injection, especially a needle-free dosing device.

Please refer to the Patent No. D161736S of the Republic of China, a stopper for a needle-free dosing device, which is disposed between a cover and a base, the cover forming an inlet above the stopper A flat cylindrical platform portion is formed between the half portion and the lower half portion, and the lower half portion of the stopper member is an approximately semicircular arcuate cylinder body, and one side of the arcuate cylinder body is recessed inwardly to form a concave portion. a constricted portion having a semi-circular opening that penetrates to the upper half of the stopper but does not penetrate the top end of the upper half, and the stopper is not pushed by an external force, The stopper seals the inlet of the needle-free dosing device, and when the stopper is pushed by the injection end of the syringe, the stopper is elastically deformed, and at this time, the inlet of the needle-free dosing device is opened In the state, the liquid medicine in the syringe passes through the inlet of the needle-free dosing device to add the drug solution.

In the stopper of the conventional needle-free dosing device, the upper half and the platform portion close the entrance of the cover, and the platform portion and the cover are inevitably slightly inaccurate when the platform portion is placed on the cover. In the case of the inside, the following two situations are apt to occur: in the first case, the platform portion is slightly smaller than the inner space of the cover, so that the platform portion cannot fit the inner wall surface of the cover, and a gap is generated, so When the medicine is added, it will cause the drip liquid to reversely leak through the gap; the second condition is that the platform portion is slightly larger than the inner space of the cover, the platform needs to be The portion is hardly pushed into the cover, although the platform portion can be fitted to the inner wall surface of the cover, once the platform portion is pushed open, since the platform portion is slightly larger than the inner space of the cover, When the elastic portion is restored to the original state, the platform portion is caught on the inner wall surface of the cover, so that the inner wall surface of the cover portion cannot be fitted around the platform portion, and the above two conditions can be known that the needle-free addition There is still room for improvement in the stopper of the drug device.

The main purpose of this creation is to provide a needle-free dosing device for the purpose of preventing leakage of drip liquid.

According to the present invention, a needle-free dosing device is mainly composed of a conical cover, a body and an elastic anti-reverse block. The inside of the tapered cover forms a first receiving groove, and the two ends of the tapered cover respectively form a small diameter end and a large diameter end, and the small diameter end and the large diameter end respectively form an injection port and an inlet The injection port, the first receiving groove and the inlet are in communication with each other, and an annular convex step is formed inwardly along the inner wall surface of the tapered cover, and the inner wall surface of the large diameter end forms a first combination unit. One end of the seat body is concavely formed to form a concave portion, and the other end is extended to form a connecting portion, a second receiving groove is formed in the concave portion, a passage is formed in the middle of the connecting portion, and the seat body is formed between the concave portion and the connecting portion. a wall body, the wall body is formed in the middle to form a liquid supply hole, the concave portion, the liquid supply hole and the passage are connected to each other, and the surrounding wall surface of the seat body forms a second joint portion, the second joint portion and the The first receiving portion and the second receiving portion form an accommodating space. The elastic anti-reverse block is located in the accommodating space, and the elastic anti-reverse block forms a first segment, a second segment and a third segment, and the second segment is located between the first segment and the third segment, The first segment, the second segment and the third segment are formed to form a hollow portion, one end of the elastic anti-reverse block is located in the first segment, and a closed end is formed in the first segment, and the elastic anti-reverse block is another One end is located in the third segment, the diameter of the first segment is smaller than the diameter of the second segment, and a portion of the second segment extends to form the third segment, the closed end of the first segment is located at the injection port, and is closed The injection port, the periphery of the second section protrudes to form an elastic ring, the elastic ring abuts against the lower edge of the annular protrusion, and is attached to the inner wall surface of the tapered cover, the lower edge of the third section The hollow portion of the third segment is in contact with the liquid supply hole and the accommodating space.

Thereby, the elastic ring of the present invention abuts against the lower edge of the annular convex step and is attached to the inner wall surface of the tapered cover to prevent leakage of drip liquid.

The elastic anti-reverse block of the needle-free dosing device provided by the present invention has an elastic ring which abuts against the lower edge of the annular convex step of a conical cover and fits within the conical cover Wall. The elastic anti-reverse block is formed by a first segment, a second segment and a third segment. The second segment is located between the first segment and the third segment, and the first segment, the second segment and the third segment are formed to form a hollow portion, and one end of the elastic anti-reverse block is located in the first segment. And forming a closed end in the first segment, the other end of the elastic anti-reverse block is located in the third segment, the diameter of the first segment is smaller than the diameter of the second segment, and a portion of the second segment extends to form the In the third stage, the periphery of the second section protrudes to form the elastic ring.

Thereby, the elastic ring of the present invention is attached to the inner wall surface of the conical cover to prevent leakage of drip liquid.

100‧‧‧free needle dosing device

10‧‧‧Conical cover

11‧‧‧First slot

12‧‧‧Small path end

121‧‧‧Injection

122‧‧‧ External screw segments

124‧‧‧First inverted conical surface

14‧‧‧ Large diameter end

141‧‧‧ Entrance

16‧‧‧ annular step

18‧‧‧ First Joint Department

181‧‧‧First class

20‧‧‧ body

21‧‧‧ recess

211‧‧‧Second capacity

22‧‧‧ Connection section

221‧‧‧ channel

24‧‧‧ wall

241‧‧‧ Liquid supply hole

26‧‧‧Second junction

261‧‧‧second class

30‧‧‧Flexible anti-reverse block

31‧‧‧ first paragraph

311‧‧‧closed end

312‧‧‧Second inverted conical surface

32‧‧‧second paragraph

321‧‧‧elastic ring

322‧‧‧Little Trails Department

33‧‧‧ third paragraph

34‧‧‧ Hollow

40‧‧‧Infusion intubation

50‧‧‧ syringe

51‧‧‧ head

A‧‧‧ accommodating space

B‧‧‧ drip

C‧‧‧ liquid

Fig. 1 is an exploded perspective view showing the first preferred embodiment of the present invention, showing a state in which the tapered cover, the elastic anti-reverse block, and the seat are separated.

Figure 2 is a perspective view of a first preferred embodiment of the present invention.

Fig. 3 is a cross-sectional view taken along line 3-3 of Fig. 2, showing that the elastic anti-reverse block is located in the accommodating space.

Fig. 4 is a schematic cross-sectional view showing the connecting infusion tube of the first preferred embodiment of the present invention, showing that the elastic ring is attached to the inner wall surface of the conical cover to prevent leakage of drip liquid.

Fig. 5 is a schematic cross-sectional view showing the uninjected liquid of the first preferred embodiment of the present invention, showing that the syringe is not pushed against the elastic anti-reverse block.

Fig. 6 is a schematic cross-sectional view showing the injection liquid of the first preferred embodiment of the present invention, showing that the syringe is pushed against the elastic anti-reverse block.

For a detailed description of the technical features of the present invention, the following preferred embodiments are described with reference to the following drawings, wherein: FIG. 1 to FIG. 3, a first preferred embodiment of the present invention is provided. The needle-free dosing device 100 is mainly composed of a conical cover 10, a body 20 and an elastic anti-reverse block 30.

The tapered cover 10 has a first receiving groove 11 formed therein. As shown in FIG. 1 , the two ends of the tapered cover 10 respectively form a small diameter end 12 and a large diameter end 14 , and the small diameter end 12 . And the large diameter end 14 respectively defines an injection port 121 and a receiving inlet 141. The injection port 121, the first receiving groove 11 and the inlet opening 141 are in communication with each other, and the inner wall surface of the tapered cover 10 faces inward. The protrusion forms an annular step 16, and the inner wall surface of the large diameter end 14 forms a first joint portion 18. In the first embodiment, the first joint portion 18 forms a plurality of consecutive first stages 181 as shown in FIG. In addition, an outer thread segment 122 is formed around the outer periphery of the small diameter end 12 of the tapered cover 10, as shown in FIG. In addition, the injection port 121 is tapered to form a first inverted conical surface 124, as shown in FIG.

One end of the base body 20 is recessed to form a recess 21, and the other end is extended to form a connecting portion 22. As shown in FIG. 1, a recess 211 is formed in the recess 21, and a passage 221 is formed in the middle of the connecting portion 22. A wall body 24 is formed between the recessed portion 21 and the connecting portion 22, and a liquid supply hole 241 is formed in the middle of the wall body 24, the second receiving groove 211, the liquid supply hole 241 and the channel The 221 is in communication with each other, and a peripheral portion of the base 20 defines a second joint portion 26, and the second joint portion 26 cooperates with the first joint portion 18, the first pocket 11 and the second pocket 211 forms an accommodation space A as shown in FIG. In the first embodiment, the second joint portion 26 forms a continuous plurality of second stages 261 corresponding to the first stages 181 as shown in FIGS. 1 and 3.

The elastic anti-reverse block 30 is located in the accommodating space A. As shown in FIG. 3, the elastic anti-reverse block 30 forms a first segment 31, a second segment 32 and a third segment 33. The second segment 32 Located between the first segment 31 and the third segment 33, the first segment 31, the second segment 32, and the third segment 33 are formed to form a hollow portion 34. One end of the elastic anti-reverse block 30 is located at the first portion a section 31, and forming a closed end 311 in the first section 31, the other end of the elastic anti-reverse block 30 is located in the third Section 33, referring to FIG. 1, the diameter of the first segment 31 is smaller than the diameter of the second segment 32, and a portion of the second segment 32 extends to form the third segment 33, and the first segment 31 is closed. The end 311 is located at the injection port 121 and closes the injection port 121. The periphery of the second segment 32 protrudes to form an elastic ring 321 which abuts against the lower edge of the annular step 16 and is attached to the end. The inner wall surface of the tapered cover 10, as shown in FIG. 3, the lower edge of the third segment 33 abuts against the wall body 24, and is located at the hollow portion 34 of the third segment 33 and the liquid supply hole 241, The accommodating space A is in communication. In the first embodiment, the closed end 311 of the first segment 31 is tapered to form a second inverted conical surface 312. The second inverted conical surface 312 can conform to the first inverted conical surface 124, as shown in FIG. Show. In addition, a small diameter portion 322 is formed on the upper portion of the second portion 32. The elastic ring 321 is located at a lower edge of the small diameter portion 322. The outer diameter of the small diameter portion 322 is smaller than the inner diameter of the annular convex portion 16.

The first section 31 of the elastic anti-reverse block 30 has a cylindrical shape as shown in FIG. In addition, the second segment 32 is in the form of a platform as shown in FIG. Further, the third segment 33 is an arcuate piece as shown in FIG.

The structure of the first preferred embodiment of the present invention has been described above, and the state of use of the first preferred embodiment of the present invention will be described next.

Referring to FIG. 4, when the user does not use the needle-free dosing device 100 to add the medicine, the connecting portion 22 of the dosing device 100 is connected to an infusion tube 40, and the infusion tube 40 has a little drop B, and the drip liquid B will flow into the channel 221, the liquid supply hole 241, and the accommodating space A. Since the elastic ring 321 abuts against the lower edge of the annular protrusion 16 and is attached to the inner wall surface of the tapered cover 10, Therefore, the drip B is blocked by the elastic ring 321 to prevent the drip B from leaking out.

Referring to Figures 5 to 6, when the user uses the needle-free dosing device 100 to add the medicine, the head 51 of a syringe 50 is directly inserted into the needle-free dosing device 100, the head of the syringe 50 The portion 51 is located at the injection port 121, and the head 51 of the syringe 50 is pushed against the closed end 311 of the elastic anti-reverse block 30, so that the closed end 311 of the first segment 31 is separated from the injection port 121, and the second segment 32 One side is elastically deformed toward the third segment 33, and one side of the elastic ring 321 is separated from the lower edge of the annular step 16 and the inner wall surface of the tapered cover 10 to make the liquid medicine in the syringe 50 C can flow through the accommodating space A, the liquid supply hole 241, the channel 221, and finally the liquid medicine C flows into the infusion pipe 40, as shown in Fig. 6. When the user stops adding the medicine, the syringe 50 is withdrawn from the needle-free dosing device 100, and when the elastic anti-backup block 30 is elastically restored to the original state, the first segment 31 The closed end 311 is located at the injection port 121 and closes the injection port 121. The small diameter portion 322 of the second segment 32 passes through the annular protrusion 16 , and the elastic ring 321 of the second segment 32 abuts the annular protrusion. The lower edge of the step 16 is attached to the inner wall surface of the tapered cover 10.

Referring to FIG. 2, in the first preferred embodiment, the outer screw segment 122 of the tapered cover 10 is provided with a screw thread (not shown) of a bottle type liquid chemical tank (not shown). Locking, since the bottle type liquid chemical tank is well known to those of ordinary skill in the art, the detailed characteristics of the bottle type liquid medicine tank will not be described herein.

It can be seen from the above that the achievable effect of the present invention is that the plug device for the needle-free dosing device in the prior art is solved, and the platform portion and the cover cover are inevitably slightly inaccurate, and the platform portion cannot be obtained. Attaching the inner wall surface of the cover to create a gap, or when the platform portion is elastically restored to the original state, the platform portion is caught on the inner wall surface of the cover, so that the platform portion cannot be fitted around the platform portion. The problem of the inner wall of the cover. When the liquid chemical C is not added, the elastic ring 321 abuts against the lower edge of the annular step 16 and is attached to the inner wall surface of the tapered cover 10, thereby preventing the leakage of the drip B. Moreover, since the outer diameter of the small diameter portion 322 of the second segment 32 is smaller than the inner diameter of the annular convex portion 16, the small diameter portion 322 of the second segment 32 is elastically restored when the elastic anti-reverse block 30 is elastically restored. The elastic ring 321 can be smoothly passed through the lower edge of the annular protrusion 16 and fit on the inner wall surface of the tapered cover 10 to make the second elastic resilient block 30 Segment 32 is smoothly reset upon elastic recovery.

100‧‧‧free needle dosing device

10‧‧‧Conical cover

11‧‧‧First slot

12‧‧‧Small path end

121‧‧‧Injection

122‧‧‧ External screw segments

124‧‧‧First inverted conical surface

14‧‧‧ Large diameter end

141‧‧‧ Entrance

16‧‧‧ annular step

18‧‧‧ First Joint Department

181‧‧‧First class

20‧‧‧ body

21‧‧‧ recess

211‧‧‧Second capacity

22‧‧‧ Connection section

221‧‧‧ channel

24‧‧‧ wall

241‧‧‧ Liquid supply hole

26‧‧‧Second junction

261‧‧‧second class

30‧‧‧Flexible anti-reverse block

31‧‧‧ first paragraph

311‧‧‧closed end

312‧‧‧Second inverted conical surface

32‧‧‧second paragraph

321‧‧‧elastic ring

322‧‧‧Little Trails Department

33‧‧‧ third paragraph

34‧‧‧ Hollow

Claims (10)

A needle-free dosing device comprises: a conical cover, the inside of which forms a first receiving groove, the two ends of the conical cover respectively form a small diameter end and a large diameter end, the small diameter end and the large end The inlet end and the inlet port are respectively connected to each other, and the injection port, the first groove and the inlet are connected to each other, and an annular convex step is formed to protrude inward along the inner wall surface of the tapered cover. The large-diameter end forms a first joint portion on the inner wall surface; the body has a concave portion formed at one end and a connecting portion extending at the other end, and a second receiving groove is formed in the concave portion, and a passage is formed in the middle of the connecting portion. The seat body forms a wall body between the recessed portion and the connecting portion, and the wall body penetrates to form a liquid supply hole. The recessed portion, the liquid supply hole and the passage are connected to each other, and the surrounding wall surface of the seat body is formed. a second joint portion, the second joint portion is correspondingly engaged with the first joint portion, the first pocket and the second pocket form an accommodating space; and an elastic anti-reverse block is located in the accommodating space The elastic anti-reverse block forms a first segment, a second segment, and a third segment. The second segment is located between the first segment and the third segment, and the first segment, the second segment and the third segment form a hollow portion, and one end of the elastic anti-reverse block is located in the first segment, and Forming a closed end in the first segment, the other end of the elastic anti-reverse block is located in the third segment, the diameter of the first segment is smaller than the diameter of the second segment, and a portion of the second segment extends to form the first segment In the three sections, the closed end of the first section is located at the injection port, and the injection port is closed, and the periphery of the second section is convex to form an elastic ring, and the elastic ring abuts against the lower edge of the annular convex step, and is attached The lower edge of the third section is opposite to the inner wall surface of the tapered cover, and the hollow portion of the third section is in communication with the liquid supply hole and the accommodating space. The needle-free dosing device according to claim 1, wherein the first joint portion forms a continuous plurality of first stages, and the second joint portion forms a continuous plurality of second stages, and the second stages correspond to the first level One class. The needle-free dosing device of claim 1, wherein the injection port is tapered to form a first inverted conical surface; the closed end of the first segment is tapered to form a second inverted conical surface, the second inverted The conical surface can conform to the first inverted conical surface. The needle-free dosing device according to claim 1, wherein the first segment is a cylindrical shape. A needle-free dosing device according to item 1 of the patent application scope, wherein: the second segment is a platform shape. According to the needle-free dosing device of claim 1, wherein the third segment is an arc piece. According to the needle-free dosing device of claim 1, wherein the outer periphery of the small-diameter end of the tapered cover is formed with an external thread segment. According to the needle-free dosing device of claim 1, wherein: the upper portion of the second section forms a small diameter portion, and the elastic ring is located at a lower edge of the small diameter portion, and the outer diameter of the small diameter portion is smaller than the The inner diameter of the annular step. The elastic anti-reverse block of the needle-free dosing device has an elastic ring which abuts against the lower edge of the annular convex step of a conical cover and is attached to the inner wall surface of the conical cover. The inverse block includes: a first segment, a second segment, and a third segment, the second segment is located between the first segment and the third segment, the first segment, the second segment, and the third segment The segment penetrates to form a hollow portion, one end of the elastic anti-reverse block is located at the first segment, and a closed end is formed in the first segment, and the other end of the elastic anti-reverse block is located in the third segment, the first segment The diameter is smaller than the diameter of the second segment, and a portion of the second segment extends to form the third segment, and the periphery of the second segment protrudes to form the elastic ring. The elastic anti-reverse block of the needle-free dosing device according to claim 9 of the patent application scope, wherein: the third segment is an arc piece.