TWM467466U - Mini drainage device - Google Patents

Description

Mini drain

The present invention relates to a flow guide, and more particularly to a mini-drain for piercing a fluid.

Clinically, many patients often have to drain body fluids, such as ascites, pleural effusion, or drainage of urine. Different drainage devices use different drainage devices for different indications. For example, ascites drainage, there is no specially designed drain, so the IV catheter is usually used as a drainage device. When pleural effusion, hemothorax or pneumothorax is drained, a chest tube, a pigtail drain or an IV catheter is used as a drain. In the case of acute urinary retention, a Foley catheter is used. When the catheter is not inserted, an emergency suprapubic cystostomy is used.

However, because the operation techniques of the aforementioned various types of drainage devices are complicated, the operator usually has to undergo professional training to get started, so it is usually performed by an experienced physician, and the operation time is long, and the immediate drainage purpose cannot be achieved, such as a chest tube (chest) The tube), the pigtail drain, and the emergency suprapubic cystostomy typically take at least 10 minutes. In addition to this In addition, the above-mentioned drainage device also has a problem of poor fixation effect, such as a pigtail drain and an IV catheter, which often fall off due to a change in the posture of the patient, resulting in the need for repositioning and increasing the risk of the patient. As well as medical costs, and when the IV catheter is often used as an ascites or pleural effusion, the venous indwelling needle is often repositioned because it is more likely to be twisted and blocked. Moreover, because medical institutions need to use different drainage devices for various diseases, the pressure on the cost of preparing the medical institutions will increase, and the dilemma of drainage surgery that cannot be performed immediately due to insufficient inventory of some drainage devices often occurs.

Accordingly, it is an object of the present invention to provide a mini-drain that is adaptable to a variety of conditions.

Therefore, the novel mini drainer comprises a soft outer needle, a gas valve mounted on the soft outer needle, and a hard inner needle inserted in the soft outer needle. The soft outer needle comprises a flexible and deformable needle tube portion, a set of a balloon portion which is disposed outside the front end portion of the needle tube portion and which can be inflated and elastically expanded and expanded, and an inflation extending outward from the needle tube portion. The tube portion defines a drainage channel extending forwardly and rearwardly along the length thereof, and an inflation duct extending along the length of the needle tube and extending along the length of the drainage channel and communicating with the inflation tube portion. The gas valve is mounted to the inflation tube portion and can be driven to open to open the inflation tube portion. The hard inner needle is inserted into the drainage channel of the needle tube portion and can be inserted forwardly and outwardly, and has a puncture tip protruding outward from the front end of the needle tube portion.

The effect of the novel: through the soft outer needle and the hard inner needle structure The design can directly guide the soft outer needle into the body to be drained by means of injection, and has excellent fixing ability, and the overall operation steps are simple and convenient, the required operation time is short, and has wide applicability, Help reduce the pressure and cost of preparation for medical institutions.

3‧‧‧soft outer needle

31‧‧‧ Needle Department

311‧‧‧Drainage channel

312‧‧‧Inflatable pipe

313‧‧‧ mesh

314‧‧‧ length scale

32‧‧‧Transfer head

33‧‧‧Ball Department

34‧‧‧Inflatable tube department

4‧‧‧ gas valve

5‧‧‧Inflatable parts

6‧‧‧hard needle

61‧‧‧Puncture tip

62‧‧‧Pushing Department

900‧‧‧ body

Other features and effects of the present invention will be apparent from the following description of the drawings. FIG. 1 is an exploded perspective view of a preferred embodiment of the present invention. FIG. 1 is a side cross-sectional view of a soft outer needle; FIG. 3 is a side view of the preferred embodiment for puncture into a body; and FIG. 4 is a view similar to FIG. 3, illustrating the soft outer needle positioned in the body The situation at the time.

Referring to Figures 1, 2, and 3, a preferred embodiment of the novel mini-drain can be used to puncture the body 900 for drainage of fluid from the body. The mini-drainage device comprises a flexible outer flexible needle 3, a gas valve 4 fixed to the soft outer needle 3, and a hard-to-open coaxially inserted into the soft outer needle 3. The needle 6 and a detachable member are inserted into the inflatable member 5 of the gas valve 4.

The soft outer needle 3 is made of a soft and flexible elastic material, such as silicone rubber, rubber or other soft elastic plastic material, etc., the soft outer needle 3 a needle tube portion 31 extending forward and backward, a transfer head 32 coaxially connected to the rear end of the needle tube portion 31, and a hollow balloon-shaped balloon portion 33 fixed to the outside of the needle tube portion 31, and One end thereof is attached to the inflation tube portion 34 of the rear end section of the needle tube portion 31.

The inside of the needle tube portion 31 defines a drainage channel 311 extending along the front side thereof, and an inflation duct 312 extending along the longitudinal direction thereof and spaced apart from the radial direction of the drainage channel 311 to communicate with the balloon portion 33. And having two screens 313 which are radially disposed at a front end portion thereof and communicate with the drainage channel 311. The outer peripheral surface of the needle tube portion 31 is further provided with a plurality of longitudinal intervals along the longitudinal direction thereof, and is matched with A length scale 314 indicating the length. The adapter head 32 can be used to connect other draining devices (not shown).

The balloon portion 33 is sleeved and fixed outside the front end portion of the needle tube portion 31 and adjacent to the rear of the mesh holes 313. The inflation tube portion 34 communicates with the rear end of the inflation duct 312, and can inflate or vent the gas in the balloon portion 33 via the inflation duct 312.

The air valve 4 is mounted and fixed to the inflation tube portion 34, and is used for hermetically sealing the inflation tube portion 34, and the inflatable member 5 is detachably connected to the inserted member, and the inflatable member is inserted. 5 driving is turned on, and the inflatable member 5 and the inflation tube portion 34 are turned on, so that the inflatable member 5 can be inflated into the inflation tube portion 34, and the balloon portion 33 is inflated to drive the balloon portion 33 to elastically expand and expand. Or, the gas in the inflation tube portion 34 is removed, the inflated balloon portion 33 is deflated and atrophied, and the gas valve 4 is immediately closed at the moment when the inflatable member 5 is detached, and the inflation is closed again. Tube portion 34.

In the present embodiment, the inflator 5 is a syringe for filling the balloon portion 33 with a gas. However, when the balloon portion 33 is filled with a liquid, the balloon portion 33 may be driven to drive the balloon portion 33 as well. The diameter expands and expands. In addition, since the gas valve 4 is a general member and has many types, it is not an improvement point of the present invention, and therefore will not be described in detail.

The hard inner needle 6 is made of a metal material and is detachably inserted into the drainage channel 311 of the needle tube portion 31, and has a sharp puncture tip 61 that passes forwardly from the front end of the needle tube portion 31. And a pushing portion 62 that is exposed at the rear end of the soft outer needle 3 and is forwardly biased against the transfer head 32.

In the present embodiment, the outer diameter of the needle tube portion 31 is 2.15 mm, the diameter of the drainage channel 311 is 1.8 mm, the diameter of the hard inner needle 6 is 1.75 mm, and the diameter of the balloon portion 33 after inflation is the needle tube portion 31. The diameter is 2 to 4 times, but the size of the soft outer needle 3 and the hard inner needle 6 is not limited thereto.

Referring to FIG. 1, 3, and 4, when the mini-drain is used, the hard inner needle 6 can be inserted into the drainage channel 311 of the soft outer needle 3, and the pushing portion 62 is forwardly restricted. Abutting the transfer head 32, and then pushing the puncture portion 62 of the hard inner needle 6 forward, the puncture tip 61 is forced into the body 900 while the soft outer needle is inserted. The needle tube portion 31 of the needle 3 is gradually guided into the predetermined drainage site, for example, into the abdominal cavity or the chest cavity, and the insertion depth can be understood according to the length scale 314 of the outer circumferential surface of the needle tube portion 31 during the puncture, and the insertion depth is immediately determined. Is it appropriate?

After the needle portion 31 is punctured, the hard needle 6 can be used. Pulling the soft outer needle 3 backward, leaving the soft outer needle 3 in the body, and inserting the inflatable member 5 into the air valve 4, driving the inflatable member 5 to start inflating the balloon portion 33, thereby driving The balloon portion 33 is elastically expanded and expanded, and after the balloon portion 33 is inflated to a specific size, the inflatable member 5 can be detached from the air valve 4 to make the air valve 4 instantaneous. The inflation tube portion 34 is closed and closed, and the balloon portion 33 is maintained in a radial expansion state.

At this time, the balloon portion 33 of the radial expansion and expansion is slid into the body 900, so that the needle portion 31 is inserted and positioned on the body without falling off. At the same time, the fluid to be drained in the body passes through the needle portion 31. The front opening and the mesh hole 313 flow into the drainage channel 311, and are externally led out, which can be used immediately and generate a drainage effect, because the soft outer needle 3 is made of a soft and flexible elastic material, such as silicone rubber, Rubber or other soft elastic plastic materials, etc., so it is not easy to be folded to cause drainage obstruction. In practice, other drainage tubes (not shown) may be connected to the adapter head 32 of the soft outer needle 3 to divert the drained liquid to a collection bag (not shown).

When the soft outer needle 3 is to be detached from the body, the inflatable member 5 can be inserted and inserted into the air valve 4, and the gas in the balloon portion 33 can be removed by the inflatable member 5 to make the balloon The portion 33 is elastically atrophied and complexed, and then the soft outer needle 3 can be pulled out of the body, which is quite convenient. However, in the implementation, the opening of the gas valve 4 is not necessary to insert the inflatable member 5, and the structural design of the gas valve 4 may be matched, and other tools are used to drive the gas valve 4 to be opened to fill the balloon portion 33. The high pressure gas inside is released.

In summary, the needle portion 31 of the soft outer needle 3 and the balloon portion 33 are structurally designed, and the hard outer needle 3 is detachably inserted into the soft outer needle 3. The inner needle 6 is structurally designed to directly guide the needle portion 31 of the soft outer needle 3 into the body to be drained by means of an injection, and can be used immediately, and can drive the balloon portion 33 to expand the plug. The design of the body 900 has an excellent fixing ability, so that the soft outer needle 3 can be inserted and positioned without falling off. The overall operation steps are simple and convenient, can be completed without special skills, and the required operation time is short, and can be widely applied to the chest or abdominal cavity of the human body, and it is not necessary to separately prepare different drainage tubes or drainage devices for different drainage portions. It helps to reduce the pressure and cost of preparation for medical institutions, and is quite practical and convenient. Therefore, the creative purpose of this new type has been achieved.

However, the above is only the preferred embodiment of the present invention. The scope of the present invention is not limited thereto, that is, the simple equivalent changes and modifications made in accordance with the scope of the new patent application and the contents of the patent specification are still within the scope of the present patent.

3‧‧‧soft outer needle

31‧‧‧ Needle Department

313‧‧‧ mesh

314‧‧‧ length scale

32‧‧‧Transfer head

33‧‧‧Ball Department

34‧‧‧Inflatable tube department

4‧‧‧ gas valve

5‧‧‧Inflatable parts

6‧‧‧hard needle

61‧‧‧Puncture tip

62‧‧‧Pushing Department

Claims (7)

A mini-drainage device comprising: a soft outer needle comprising a flexible and deformable needle tube portion, a set of balloon portions disposed outside the front end portion of the needle tube portion and inflatable and elastically expanding and expanding, and a balloon portion An inflation tube portion extending outward from the needle tube portion, the needle tube portion defining a drainage passage extending along the length of the needle tube portion and extending forward and backward along the length thereof and spaced apart from the drainage passage and communicating with the inflation tube portion An inflation pipe; an air valve installed in the inflation pipe portion and being driven to open to open the inflation pipe portion; and a hard inner needle which can be pulled back and forwardly inserted into the drainage channel of the needle portion And having a puncture tip protruding outward from the front end of the needle portion. The mini-drain according to claim 1, further comprising an inflatable member detachably coupled to the air valve to drive the air valve to be opened and inflated into the inflation tube portion via the air valve. The mini-drain according to claim 1, wherein the needle portion has at least one mesh hole that is radially disposed in a front end portion thereof and communicates with the drainage channel and is located in front of the balloon portion. The mini-drain according to claim 1, wherein the outer peripheral surface of the needle tube portion is provided with a plurality of length scales distributed along the longitudinal direction thereof and matched to indicate the length. The mini-drain as described in claim 1, wherein the soft outer needle further has a transfer head that is fixedly mounted and fixed to a rear end of the needle portion. The mini-drain according to claim 1, wherein the diameter of the balloon portion after expansion is 2 to 4 times the diameter of the needle portion. The mini-drain as described in claim 1, wherein the hard inner needle further has a pushing portion exposed to a rear end of the soft outer needle.