TWM506613U - Safety intravascular cannula - Google Patents

Description

Safe intravenous indwelling needle

This creation is about a safe intravenous indwelling needle that automatically retracts the hard needle into a safety sleeve that is used to keep the soft needle of the catheter in the human vein for subsequent attachment to the syringe or drip Infusion tube.

A venous indwelling needle is a medical needle that inserts a catheter soft needle into a patient's vein and left it for a long time to establish an injection line that provides rapid delivery of medication and infusion.

The conventional intravenous indwelling needle has a catheter soft needle and a hard needle assembly, the hard needle assembly having a needle holder and a hard needle needle at the front end of the needle, the catheter soft needle having a soft needle holder and The soft needle at the front end of the soft needle holder is assembled to the front end of the needle holder so that the soft needle is sleeved outside the hard needle. When in use, the medical staff holds the needle holder and pushes the hard needle needle with the soft needle into the vein of the patient, and then fixes the soft needle seat on the patient's skin by tape. Holding the needle holder to withdraw the hard needle, and completing the installation of the catheter soft needle.

After the installation of the soft needle of the catheter, the used hard needle assembly must be recycled, and the medical staff must place the hard needle in the cover. However, the hard needle is slender and sharp. During the process of arranging the cover, the medical staff may be injured due to inadvertent operation, and the medical staff may be exposed to the blood of the patient to cause illness, resulting in medical work accidents.

One of the aims of the present invention is to solve the disadvantage that the conventional intravenous indwelling needle is unsafe and inconvenient to be recovered after use.

For the above purposes and other purposes, the present invention discloses a safe intravenous indwelling needle comprising a syringe, a needle holder, a spring, a limit seat, a card release member and a catheter soft needle; one end of the syringe Having a through-pin hole and a first abutment flange surrounding the through-pin hole; the needle holder is movably received in the syringe and has a hard needle needle along the axial direction of the syringe The direction of the front section is divided into a front section, a middle section and a rear section. The outer surface of the front section has a circumferentially extending and axially extending rib. The front section and the middle section have an annular annular limiting groove, and the middle section a second abutting flange is formed at the rear end; the two ends of the spring are respectively coupled to the first abutting flange and the second abutting flange, and the spring surrounds the needle when the original length is long a middle portion, a front portion and a hard needle, and the needle holder is received in the syringe; the limiting seat is formed at one end of the barrel, and the limiting seat has a plug connecting the through hole a slot and a limiting hole, the limiting hole has a surrounding arrangement and corresponds to the ribs a recessed portion for the hard needle needle and the front portion of the needle holder to protrude outside the needle barrel and the limiting seat through the limiting hole; the latching member is detachably inserted into the limiting seat In the slot, the latching member has a locking hole and a releasing hole, and the locking hole is configured to be engaged with the limiting hole to engage in the annular limiting slot of the needle seat. So that the latching member blocks the recesses and interferes with the ribs, and the release holes are configured to align the recesses when the aligning holes are aligned with the limiting holes, so that the recesses are The soft needle system has a soft needle seat and a soft needle coupled to the soft needle seat, and the soft needle seat is detachably coupled to the front portion of the needle holder .

The above-mentioned safety vein indwelling needle has a pressing piece at one end thereof, and the releasing hole is adjacent to the pressing piece than the locking hole.

The above-mentioned safe venous indwelling needle, wherein the syringe is provided with a blocking piece adjacent to the slot opening of the limiting seat.

The above-mentioned safe intravenous indwelling needle, wherein the syringe is assembled from a first sleeve and a second sleeve.

The above-mentioned safety venous indwelling needle has a cannula portion and a cap for closing the cannula portion.

The above-mentioned safe intravenous indwelling needle has a flap on the side of the soft needle seat of the soft needle for abutting on the skin and for sticking.

The above-mentioned safe intravenous indwelling needle has a dosing exhaust pipe in the soft needle seat.

The safety venous indwelling needle further includes a cover for covering the front end of the syringe and accommodating the catheter soft needle, the hard needle, the limiting seat and the latching member.

The safe intravenous indwelling needle of the present invention can automatically recover the needle holder by pressing the card release member, and the hard needle needle is accommodated in the syringe, which can prevent the medical staff from being inadvertently operated due to the operation. The injury greatly increases the safety of the use of the medical device. In addition, the safe intravenous indwelling needle recovers the syringe as long as the card release member is pressed, and has the advantages of convenient operation and quickness.

In order to fully understand the purpose, features and effects of this creation, the following specific examples, together with the attached drawings, provide a detailed description of the creation, as explained below:

1 to 2, the safety intravenous indwelling needle 1 of the present embodiment includes a syringe 10, a needle holder 20, a spring 30, a limiting seat 40, a latching member 50 and a catheter soft needle 60. .

One end of the barrel 10 has a through hole 11 and a first abutting flange 12 surrounding the one of the through holes 11. As shown in FIG. 2, the syringe 10 can be assembled from a first sleeve 10A and a second sleeve 10B, wherein the syringe 10 has an accommodation space for accommodating the entire needle holder 20.

The needle holder 20 is movably received in the syringe 10 and has a hard needle 21. The needle holder 20 is sequentially divided by the front end into a front section 20A and a middle section 20B along the axial direction of the cylinder. In a rear section 20C, the outer diameter of the front section 20A is substantially gradually increased. The outer surface of the front section 20A has a circumferentially extending and axially extending rib 22 (FIG. 3), and the front section 20B and the middle section 20C are in contact with one of the depressions. The annular limiting groove 23 has a second abutting flange 24 at the junction of the middle portion 20B and the rear portion 20C.

The two ends of the spring 30 are respectively coupled to the first abutting flange 12 and the second abutting flange 24, and the spring surrounds the middle portion 20B, the front portion 20A and the hard needle 21 of the needle holder 20 in the original length. And the needle holder 20 is received in the syringe 10. When the needle holder 20 moves toward the front end of the syringe 10, the spring 30 is compressed, in other words, the spring force of the spring 30 tends to return the needle holder 20 to the state of being accommodated in the syringe 10. .

The limiting seat 40 is formed at one end of the barrel 10, and the limiting seat 40 has a slot 41 and a limiting hole 42 that communicate with the through-hole 11 , and the limiting hole 42 has a surrounding arrangement and The ribs correspond to the recesses 42A (FIG. 4) for the hard needle 21 and the front section 20A of the needle holder 20 to protrude outside the barrel 10 and the limiting seat 40 through the limiting hole 42.

The latching member 50 is detachably inserted into the slot 41 of the limiting seat 40. The latching member 50 has a locking hole 51 and a releasing hole 52 (FIGS. 5A and 5B). The hole 51 is configured to be engaged with the annular limiting groove 23 of the needle holder 20 when the positioning hole 42 is aligned, so that the latching member 50 blocks the concave portions 42A and interfere with the convex strips 22 The retaining hole 52 is used to align the retaining hole 52 with the recessed portion 42A when the retaining hole 52 is aligned with the limiting hole 42 so that the front segment 20A of the needle retainer 20 passes through the limiting hole 42. Specifically, as shown in FIGS. 5A and 5B, the locking hole 51 is smaller than the release hole 52, and at least a portion of the locking hole 51 has a shape conforming to the shape of the annular limiting groove 23, so that the locking is performed. When the hole 51 is aligned with the limiting hole 42 , the latching member 50 blocks the recess 42A and interferes with the ribs 22 to fix the position of the needle holder 20; the release hole 52 is greater than or equal to the When the release hole 52 is aligned with the limiting hole 42 , the latching member 50 does not block the recess 42A, so that the front section 20A of the needle holder 20 can pass through the limiting hole 42 freely. . One end of the clip member 50 can have a pressing piece 53 for moving the card releasing member 50 by a pressing operation, and the releasing hole 52 is adjacent to the pressing piece 51.

As shown in FIG. 6, the catheter soft needle 60 has a soft needle holder 61 and a soft needle 62 coupled to the soft needle holder. The soft needle holder 61 is detachably coupled to the needle holder 20 in front of the needle holder 20 20A

In the present embodiment, the barrel 10 can be provided with a blocking piece 13 adjacent to the opening of the slot 41 of the limiting seat 40, which can facilitate the identification of the position of the locking member 50 and is available for operation. The hand is placed against the flap 13 to facilitate the application of force.

Referring to FIG. 7 , the front portion 20A of the needle holder 20 extends out of the limiting seat 40 . The locking hole 51 of the locking member 50 is aligned with the limiting hole 42 and is engaged with the ring of the needle holder 20 . In the limiting slot 23, the latching member 50 blocks the recesses 42A to interfere with the ribs 22, and fixes the position of the needle holder 20 and maintains the front section 20A of the needle holder 20 In the state of the limiting seat 40, the spring 30 is compressed by the first abutting flange 12 of the barrel 10 and the second abutting flange 24 of the needle holder 20, and has elasticity to be stretched. Potential energy.

Referring to FIG. 8 , the latching member 50 is pressed into the slot 41 of the limiting seat 40 , and the releasing hole 52 is aligned with the limiting hole 42 . At this time, the latching member 50 does not block the latching member 50 . The recessed portion 42A is pushed into the syringe 10 by the restoring force of the spring 30, and the hard needle 21 is completely accommodated in the syringe 10.

The safety vein indwelling needle 1 of the embodiment is convenient for the medical staff to operate. The front section 20A of the needle holder 20 is preset to extend out of the limiting seat 40 and the catheter soft needle 60 is coupled to the front section 20A of the needle holder 20 After the medical softener 60 is applied and fixed to the patient's skin, after the card release member 50 is pressed into the slot 41 of the limiting seat 40, the needle holder 20 is as described above. The syringe 10 is automatically recovered as shown in Fig. 8, and the hard needle 21 is housed in the syringe 10 to avoid stabbing the medical staff.

Referring to FIG. 9 , the safety vein indwelling needle 1 can have a cover 70 for covering the front end of the syringe 10 and accommodating the catheter soft needle 60 , the hard needle 21 , the limiting seat 40 , and The card release member 50. The cover 70 can have a receiving portion 71 to accommodate the clip member 50.

Please refer to FIG. 10 and FIG. 11 for explaining a schematic view of another embodiment of the catheter soft needle. The catheter soft needle 60' has a cannula portion 63 and an upper cover 64 for closing the cannula portion 63. The cannula portion 63 is connected to a catheter for supplying medicine (not shown). The upper cover 64 The cannula portion 63 can be closed and closed when the cannula portion 63 is not used, as shown in FIG.

In this embodiment, the side of the soft needle holder 61 of the catheter soft needle 60' has a flap 65 for abutting against the skin and for adhering the tape, so that the catheter soft needle 60' can be more fixed.

Further, the soft needle holder 61 has a dosing exhaust pipe 66 which is used to discharge air in the line when the intubating portion 63 is infused or medicated via a catheter.

In summary, the safe intravenous indwelling needle of the present embodiment can automatically recover the needle holder by pressing the card release member, and the hard needle needle is accommodated in the syringe, which can prevent the medical staff from operating. Inadvertently being stabbed, and the safety of the use of the medical device is greatly increased. In addition, the safe intravenous indwelling needle recovers the syringe as long as the card release member is pressed, and has the advantages of convenient operation and quickness.

The present invention has been disclosed in the above preferred embodiments, and it should be understood by those skilled in the art that the present invention is only intended to depict the present invention and should not be construed as limiting the scope of the present invention. It should be noted that variations and permutations equivalent to those of the embodiments are intended to be included within the scope of the present invention. Therefore, the scope of protection of this creation is subject to the definition of the scope of patent application.

1‧‧‧Safe vein indwelling needle
10‧‧‧Syringe
10A‧‧‧First sleeve
10B‧‧‧Second sleeve
11‧‧‧ pinhole
12‧‧‧First abutment flange
13‧‧‧Block
20‧‧‧ needle seat
20A‧‧‧
20B‧‧‧ middle section
20C‧‧‧After
21‧‧‧ Hard needle needle
22‧‧ ‧ ribs
23‧‧‧Circular limit slot
24‧‧‧Second abutment flange
30‧‧‧ Spring
40‧‧‧Limited seat
41‧‧‧ slots
42‧‧‧Limited holes
42A‧‧‧ recess
50‧‧‧Cards
51‧‧‧ card hole
52‧‧‧ release hole
53‧‧‧Pressing tablets
60‧‧‧ catheter soft needle
61‧‧‧Soft needle holder
62‧‧‧Soft needle
63‧‧‧Intubation Department
64‧‧‧Upper cover
65‧‧‧ wing
66‧‧‧Dosing exhaust pipe
70‧‧‧ cover
71‧‧‧ accommodating department

Fig. 1 is a schematic view showing the structure of a safe intravenous indwelling needle according to the present embodiment. Fig. 2 is an exploded perspective view of the safe intravenous indwelling needle of the present embodiment. Fig. 3 is an enlarged schematic view showing a limit seat in the safety vein indwelling needle of the present embodiment. Fig. 4 is an enlarged schematic view showing a needle holder in a safe intravenous indwelling needle of the present embodiment. 5A and 5B are a perspective view and a front view of the clip in the safe intravenous indwelling needle of the present embodiment. Fig. 6 is a perspective view showing a soft needle of a catheter in a safe intravenous indwelling needle according to the present embodiment. 7 is a schematic view showing the hard needle of the safety intravenous indwelling needle of the present embodiment extending out of the limiting seat. Fig. 8 is a schematic view showing the recovery of a hard needle in a safe intravenous indwelling needle in the present embodiment. Fig. 9 is a schematic view showing the structure of a safety intravenous indwelling needle of the present embodiment. Fig. 10 is a perspective view showing another embodiment of a catheter soft needle of the safe intravenous indwelling needle of the present embodiment. Fig. 11 is a schematic view showing a catheter soft needle of another embodiment of the safety intravenous indwelling needle of the present embodiment.

1‧‧‧Safe vein indwelling needle

10A‧‧‧First sleeve

10B‧‧‧Second sleeve

11‧‧‧ pinhole

12‧‧‧First abutment flange

13‧‧‧Block

20‧‧‧ needle seat

20A‧‧‧

20B‧‧‧ middle section

20C‧‧‧After

21‧‧‧ Hard needle needle

23‧‧‧Circular limit slot

24‧‧‧Second abutment flange

30‧‧‧ Spring

40‧‧‧Limited seat

41‧‧‧ slots

42‧‧‧Limited holes

50‧‧‧Cards

51‧‧‧ card hole

52‧‧‧ release hole

53‧‧‧Pressing tablets

60‧‧‧ catheter soft needle

61‧‧‧Soft needle holder

62‧‧‧Soft needle

Claims (8)

A safety venous indwelling needle comprising: a syringe having a through hole at one end and a first abutting flange surrounding one of the through pin holes; a needle holder movably received in the syringe and having a hard needle having a front section, a middle section and a rear section along the axial direction of the barrel, the outer surface of the front section having a circumferentially extending and axially extending rib, the front section and the middle section The joint has an annular annular limiting groove, the middle portion and the rear portion have a second abutting flange; a spring, the two ends of which are respectively coupled to the first abutting flange and the first Abutting against the top flange, the spring surrounds the middle portion of the needle holder, the front portion and the hard needle needle in the original length, and the needle holder is received in the syringe; a limiting seat is formed on the needle One end of the barrel, the limiting seat has a slot and a limiting hole that communicates with the through-pin hole, and the limiting hole has a concave portion arranged around and corresponding to the protruding strips for the hard needle and the needle The front section of the seat protrudes beyond the barrel and the limiting seat through the limiting hole; The latching member is detachably inserted into the slot of the limiting seat, and the latching member has a locking hole and a releasing hole connected to the limiting hole, and the locking hole is used for the limiting hole When it is aligned, it is engaged with the annular limiting slot of the needle seat, so that the latching member blocks the recesses and interferes with the ribs, and the releasing hole is used for aligning with the limiting hole. When the latching member does not block the recesses, so that the front section of the needle holder passes through the limiting hole; and a catheter soft needle has a soft needle seat and a soft needle coupled to the soft needle seat. The soft needle holder is for detachably coupling to the front section of the needle holder. The safety vein indwelling needle according to claim 1, wherein one end of the clip member has a pressing piece, and the releasing hole is adjacent to the pressing piece than the locking hole. A safety venous indwelling needle according to claim 1 or 2, wherein the syringe is provided with a flap adjacent to the slot opening of the limiting seat. The safety venous indwelling needle of claim 1 or 2, wherein the syringe is assembled from a first sleeve and a second sleeve. The safety venous indwelling needle of claim 1 or 2, wherein the catheter soft needle has a cannula portion and a cap for closing the cannula portion. The safety venous indwelling needle according to claim 5, wherein the soft needle seat of the catheter soft needle has a flap on the side for abutting against the skin and for adhering. The safe venous indwelling needle of claim 6, wherein the soft needle hub has a medicated exhaust tube therein. The safety vein indwelling needle according to claim 1 or 2, further comprising a cover for covering the front end of the syringe and accommodating the catheter soft needle, the hard needle, the limiting seat and the card Release.