TWM515395U - Safety intravascular cannula - Google Patents

Description

Safe intravenous indwelling needle

This creation is about a safety needle, especially a safe intravenous indwelling needle that effectively reduces needle sticking events and reduces production costs.

The needle sticking incident is a common work injury for medical staff. According to the Ministry of Health and Welfare, there are about 8,000 needle sticking events per year, that is, four needle sticking events occur every hour. The reason for the needle sticking incident is usually because Inappropriate working conditions, patient incitement, inadvertent puncture by other medical staff or random abandonment of the needle, in which, if the needle is not used, the medical staff is only injured However, if the needle has been used, it may cause infection. Therefore, in order to maintain the safety and health of medical staff, Article 56 of the Republic of China Medical Law provides for a comprehensive and progressive phase-by-year implementation from 101 years onwards. Provide safety needles.

There are many types of safety needles on the market, such as the new patent case of "Safety Needle Structure of Drip Injection Device" of the Republic of China No. M465177, the "Practical Structure of Safe Self-Destructing Syringe" of the People's Republic of China, No. CN203564613, Utility Model Patent Case, Republic of China No. M485055 "Safety Syringe" New Patent Case and Republic of China No. M475287 "Safe Vein Retaining Needle" New Patent Case..etc.

However, Republic of China No. M465177 "Safety needle knot for drip injection device The new patent case is a pull-back safety needle structure, and the People's Republic of China No. CN203564613 "Improved structure of safe self-destructing syringe" utility model patent is a self-destructive safety needle structure, these two pull-back safety The needle structure and the self-destructive safety needle structure are quite complicated in operation. If the force is applied improperly during the operation, it is easy to cause a needle sticking event. In addition, the new patent case of the "Safety Syringe" of the Republic of China No. M485055 utilizes elastic components or The safety needle structure using the elastic principle, when the elastic element is used in this structure, because the recoil force is too large, the operation is not easy, and it is easy to stain and cause pain to the patient, so the design is not good, and, in addition, the Republic of China No. M475287 The new patent case of "safe vein indwelling needle" is a needle-type safety needle structure. Due to the complicated structure, the needle-cover safety needle structure has a high production cost. Therefore, the general medical site considers the cost, and usually does not choose this. A high cost safety needle structure.

In view of the above-mentioned safety needle type, the creator of this case could not solve the problem of needle pinning and cost considerations. Therefore, it was improved and innovated by Sui Si, and after painstaking research, he finally succeeded in research and development of this safe vein indwelling needle.

The main purpose of this creation is to provide a safe venous indwelling needle that can effectively reduce the incidence of needle stick events.

The secondary objective of this creation is to provide a safe venous indwelling needle that is simple in construction and easy to handle.

Another object of the present invention is to provide a safe venous indwelling needle that is low in production cost and safe to use.

In order to achieve the above objective, the present safe venous indwelling needle comprises a needle seat, an intravenous catheter soft needle and a sheath, the needle holder has an injection needle at the front end, and the needle seat side edge is adjacent to the injection needle At least one cassette is disposed at the position, the card includes a card abutting portion and an operating portion, the venous catheter soft needle sleeve is sleeved on the injection needle, and the sheath sleeve is sleeved on the outer edge of the needle seat, the protection The outer edge of the sleeve has at least one guide rail, and one side or both sides of the guide rail have a plurality of serrations, and the side edges of the serrations respectively have an introduction surface and a retention surface, and the retention surface is located farther away from the needle holder. The needle is in the direction of the needle, and the rail has a detachable film thereon, and the rear end of the sheath has a base separable from the sheath, wherein the sheath can be used when the safety venous indwelling needle of the present invention is used The film and the base are removed and removed, and when the needle holder drives the needle to retract, the card abutting portion of the cassette is inserted into the guide rail of the sheath, and the operating portion extends to the outer edge of the sheath, and The medical staff can retract the injection needle into the sheath by pressing the operation portion.

1‧‧‧ needle seat

11‧‧‧Injection needle

111‧‧‧ sharp end

12‧‧‧Carmen

121‧‧‧Operation Department

122‧‧‧ card arrival

1221‧‧‧榫 import side

1222‧‧‧榫留留面

2‧‧‧ intravenous catheter soft needle

21‧‧‧Hose

3‧‧‧ sheath

31‧‧‧ rails

311‧‧‧Sawtooth

3111‧‧‧Import

3112‧‧‧ stranded surface

32‧‧‧film

33‧‧‧Base

34‧‧‧Base neck

331‧‧‧Connecting Department

4‧‧‧Infusion tube

The first picture is a three-dimensional appearance of the safe vein indwelling needle; the second picture is the three-dimensional exploded view of the safe vein indwelling needle; the third figure is a schematic view of the card of the safe vein indwelling needle; 4 is a schematic diagram of the operation state of the safe venous indwelling needle; FIG. 5 is a schematic diagram 2 of the action state of creating a safe intravenous indwelling needle; FIG. 6 is a schematic diagram 3 of the action state of creating a safe intravenous indwelling needle; 7 is a perspective exploded view of another embodiment of a safe intravenous indwelling needle; FIG. 8 is a schematic view showing an implementation state of another embodiment of a safe intravenous indwelling needle; and FIG. 9 is a creative safe intravenous indwelling needle. An exploded perspective view of an embodiment.

Referring to Figures 1 to 3, the created safe venous indwelling needle comprises a needle seat 1, an intravenous catheter soft needle 2, a sheath 3, the needle holder 1 comprising an injection needle 11 and at least one cassette 12, the injection The needle 11 is disposed at a front end of the needle holder 1 , and the cassette 12 is disposed on a side edge of the needle holder 1 adjacent to the injection needle 11 . The cassette 12 includes an operation portion 121 and a card abutting portion 122 . The portion 122 has a sputum introduction surface 1221 and a stagnation surface 1222. The venous catheter soft needle 2 is sleeved on the injection needle 11 of the needle holder 1, and the venous catheter soft needle 2 has a hose 21 extending at one end thereof. The hose 21 is attached to the outer edge of the injection needle 11. The outer edge of the sheath 3 has at least one guide rail 31 extending through the front end of the sheath 3. One side or both sides of the guide rail 31 are provided with a plurality of serrations 311. Each of the sides of the serrations 311 has an introduction surface 3111 and a retention surface 3112. The retention surface 3112 is located in the direction of the injection needle 11 farther from the needle holder 1 , and the retention surface 3112 and the guide rail 31 The angle of the angle is vertical or less than 90 degrees. The guide rail 31 has a detachable film 32. The rear end of the sheath 3 has a base 33 which can be separated from the sheath 3. In addition, the sheath 3 can be sleeved. On the outer edge of the hub 1 , the guide rail 31 is slidable in the latching portion 122 of the latch 12 , and the operating portion 121 of the latch 12 extends on the guide rail 31 . Adjacent to the outer edge of one end of the injection needle 11.

Referring to Figures 4-6, when the safe intravenous indwelling needle of the present invention is used, the medical staff puts the injection needle 11 together with the hose 21 into the injection site of the patient, and then presses or sticks the hose 21 with the gas permeable tape. The action of injecting or taking the liquid is performed, and after the injection or the liquid is taken out, the needle holder 1 is pulled out from the venous catheter soft needle 2, and while the extraction is performed, the base 33 is separated from the sheath 3 and the guide rail 31 is separated. The upper adhesive film 32 is removed, so that the card abutting portion 122 of the needle seat 1 enters the guide rail 31 of the sheath 3, and then the medical staff can press the operation portion 121 of the outer edge of the sheath 3 to press the cassette 12 Pushing back to the rear end of the guide rail 31 along the guide rail 31, the needle holder 1 drives the injection needle 11 to retreat into the sheath 3, so that the sheath 3 covers the outer edge of the injection needle 11 and shields the sharp end of the front end of the injection needle 11. 111. At this time, the stagnation surface 1222 of the card abutting portion 122 and the dents 311 and the stagnation surface 3112 of the guide rail 31 abut against each other, so that the needle holder 1 can no longer be pushed back, and the sharp end of the injection needle 11 is made. 111 will no longer wear the sheath 3, so the safe intravenous indwelling needle of the present invention can cover the sharp end 111 of the injection needle 11 after use. An inner sheath 3, so as to avoid In addition, the safety venous indwelling needle of the present invention stops when the cassette 12 is pushed back to the rear end of the guide rail 31, so that the operation is quite easy, and the patient is not painful, and the patient can be avoided. The pull-type safety needle structure is caused by the improper force applied by the medical staff, and the safe intravenous indwelling needle of the present invention has a simple structure, thereby effectively reducing the production cost.

Please refer to Figures 7-8 for another embodiment of the safe venous indwelling needle. Since the general venous indwelling needle is used, the back end of the needle hub 1 is sometimes connected with an infusion tube 4 for drawing blood of the patient or The drug solution is delivered to the patient, and the infusion tube 4 is connected to the test tube or the drip tube so that the infusion tube 4 can pass through the sheath 3. Therefore, in the embodiment, the guide rail 31 extends through the front and rear ends of the sheath 3, and the base 33 and the base 33 After the sheath 3 is separated, after the blood is pumped or the liquid medicine is pumped, a base neck 34 can be connected to the rear end of the sheath 3 to prevent the needle hub 1 from being pierced from the rear end of the sheath 3, which is safe in this embodiment. When the intravenous indwelling needle is used, the base 33 is first removed, and the needle holder 1 is connected to the test tube or the drip by the infusion tube 4, and the blood is taken or the liquid medicine is injected, and the base neck 34 is locked by a connecting portion 341. , socketing, gluing or other equivalent way is connected with the rear end of the sheath 3, and when the needle seat 1 is pushed back into the sheath 3, the needle seat 1 can not be protected by the base neck 34 against the needle seat 1. The sleeve 3 is worn out at the rear.

Referring to FIG. 9 , a further embodiment of the safety venous indwelling needle is provided. In this embodiment, the serrations 311 are only disposed at the front and rear ends of the guide rail 31 , so when the needle hub 1 is pushed back into the guard During the process of the sleeve 3, when the cassette 12 passes through the portion of the guide rail 31 without the serration 311, the cassette 3 is not affected by the retention surface 3112 of the serration 311, and the injection needle 11 is shaken, which can effectively avoid the injection due to the needle withdrawal. The needle 11 is shaken to cause discomfort or pain in the patient. In addition, in the artificial vein indwelling needle, the serrations 311 can also be disposed only at the rear end of the guide rail 31 (not shown), so that the injection needle 11 is completely After leaving the injection site of the patient, the cassette 12 is pushed into the serrations 311 at the rear end of the guide rail 31, so that the retention surface 3112 of the serrations 311 and the constricted surface 1222 of the cassette 12 abut against each other. And the needle seat 1 can no longer be pushed back.

The above detailed description is intended to be illustrative of the possible embodiments of the present invention and, therefore, is not intended to limit the scope of the patents of the present invention. In the scope, and the case is not only innovative in terms of technical thinking, but also has many functions that are not in the traditional structure of the habit. It has fully complied with the statutory patent requirements of novelty and progressiveness, and applied for it according to law, and urges you to approve this new type. Patent application, to encourage creation, to the sense of virtue.

1‧‧‧ needle seat

11‧‧‧Injection needle

111‧‧‧ sharp end

12‧‧‧Carmen

121‧‧‧Operation Department

122‧‧‧ card arrival

2‧‧‧ intravenous catheter soft needle

21‧‧‧Hose

3‧‧‧ sheath

31‧‧‧ rails

311‧‧‧Sawtooth

3111‧‧‧Import

3112‧‧‧ stranded surface

32‧‧‧film

33‧‧‧Base

Claims (9)

A safety venous indwelling needle is provided on an injection needle at the front end of a needle holder, and is provided with an venous catheter soft needle, which mainly comprises: a sheath which can be sleeved on the outer edge of the needle seat, and the sheath Having at least one guide rail, one side or both sides of the guide rail have a plurality of serrations, and the sides of the serrations respectively have an introduction surface and a retention surface; the needle holder is disposed adjacent to a side edge of the injection needle At least one cassette, the cassette is threaded into the guide rail. The safety vein indwelling needle according to claim 1, wherein the retention surface is perpendicular to the guide rail at an angle of less than 90 degrees, and the retention surface is located in a direction away from the needle of the needle holder. The safety vein indwelling needle according to claim 1, wherein the latch includes a latching portion and an operating portion, the latching portion is received in the guide rail, and the operating portion extends from the outer edge of the sheath And the card abutting portion has at least one 榫 introduction surface and at least one 榫 retention surface that interact with the serrations. The safety vein indwelling needle according to claim 1, wherein the guide rail is inserted through the front end or the front and rear ends of the sheath, and the rail has a detachable film, and the sheath has a separable end The base. The safety venous indwelling needle of claim 1, further comprising a base neck connectable to the rear end of the sheath. The safety venous indwelling needle of claim 5, wherein the base neck has a connecting portion that is connected to the rear end of the sheath by screwing, socketing, gluing or other equivalent means. The safe venous indwelling needle of claim 1, wherein the serrations are disposed on one side or both sides of the rail. The safety vein indwelling needle according to claim 1, wherein the serrations are provided on one side or both sides of the guide rail. The safety venous indwelling needle of claim 1, wherein the serrations are only provided on one side of the guide rail or at the rear ends of the two sides.