Patent Description:
Since using needles to inject medicine usually causes patients to experience discomfort or pain, a "needle-free injection" technique has been developed. The term "needle-free injection" means that no needle is used during medicine injection. Instead, liquid medicine is squirted at a high speed in an extremely thin diameter so that the medicine penetrates the living creature's (such as a human or animal) skin and enters the body. After entering the internal tissues of a living creature, liquid medicine may diffuse along the gaps between the tissue fibers due to the characteristics of the fluid. Therefore, little damage is caused to the tissues during the entry process. Concurrently, the medicine can be effectively distributed so that absorption is facilitated.

However, most of the injected medicine is currently liquid. If a gas is required to serve as an injected medicine, there is often a problem wherein the molecules do not efficiently enter through the skin. Therefore, the depth and effect of the medicine injected into the target are affected. That is, with previous liquid needleless injection art, the amount of gas molecule enters deep soft tissue such as dermis, subcutaneous tissue, fascia, myofascial, muscle, or nerve tissue, is inadequate for treatment purposes, making it hard to enhance the absorption of the medicine into the human body. In addition, when a gas serves as an injected medicine, needle-free injection devices need to perform a good control of the volume of the injected gas and the injection time to ensure that requirements on efficiency and safety are taken into account.

<CIT> describes a gas-powered, durable, needle-less hypodermic jet injection device which includes a hand-held injector which provides a volume of liquid medication to be injected, an injection orifice, and an injection piston.

<CIT> describes a needle free medicinal powder injecting device which is composed of a gas storing chamber, an excitation mechanism, an emission mechanism, a medicinal cylinder bearing, etc..

The purpose of the present disclosure is to provide a pressurized gas injection device and method so as to meet the requirement of high efficiency and safety.

To solve the aforementioned problems of the prior art, a pressurized gas injection device suitable for injecting a medicine in form of a pressurized gas is provided in an embodiment of the present disclosure. The pressurized gas injection device includes a discharging unit, a gas storage unit, and two seal rings. The discharging unit includes a discharging opening and a vent hole. The gas storage unit is movably disposed in the discharging unit, wherein a gas channel is formed in the gas storage unit and a chamber connected to the gas channel. The two seal rings are disposed on the inner wall of the discharging unit, and the seal rings abut the gas storage unit. When the gas storage unit is located at a first position relative to the discharging unit, a pressurized gas enters the chamber through the vent hole and the gas channel in order, and the gas channel is located between the seal rings, wherein when the gas storage unit moves from the first position to a second position relative to the discharging unit, the gas channel moves to be located between the seal rings and wherein the pressure of the pressurized gas is greater than or equal to <NUM> MPa, wherein a volume of the chamber is adjustable, and the pressurized gas in the chamber is released from the pressurized gas injection device through the gas channel and the discharging opening in order.

The gas storage unit is located at the first position relative to the discharging unit and the gas channel is communicated with the vent hole. Further, the gas storage unit comprises a hollow body and a rod, the rod is inserted into the body in a position-adjustable manner, and the chamber, which is configured to store the pressurized gas, is formed between the body and the rod. The pressurized gas injection device further comprises a gas injection opening, wherein when the gas storage unit is located at the first position relative to the discharging unit, the pressurized gas enters the gas storage unit through the gas injection opening, the vent hole, and the gas channel in order.

The advantage of the present disclosure is that the gas storage unit is movable relative to the discharging unit and forces the pressurized gas to pass through skin and reach subcutaneous tissues, so that good therapeutic results can be achieved. On the other hand, it is also possible to appropriately increase or decrease the number of auxiliary gas storage units and control them in the closed or open position, thereby selectively providing different volumes of pressurized gas, and thereby enabling quantitative volume control of the injected gas.

Numerals shown in the drawings are listed as follows:.

Embodiments of the present disclosure are described herein in accompany with the appended figures.

First, referring to <FIG>, a pressurized gas injection device <NUM> includes a casing S and a driving mechanism T (such as a movable trigger) in an embodiment of the present disclosure. A discharging unit <NUM>, a gas storage unit <NUM>, and at least two seal rings O1 and O2 are disposed in the casing S. The discharging unit <NUM> has a discharging opening <NUM> and a vent hole V, and the discharging opening <NUM> is configured to release a pressurized gas from the pressurized gas injection device <NUM>. The gas storage unit <NUM> is movably disposed in the discharging unit <NUM>, and the gas storage unit <NUM> includes a hollow body <NUM> and a rod <NUM>. The rod <NUM> is plugged in the body <NUM> with an adjustable position, and a chamber C is formed between the body <NUM> and the rod <NUM>. The chamber C is configured to store the pressurized gas. In addition, a gas channel <NUM> is formed in the body <NUM>, and the gas channel <NUM> is communicated with the chamber C. The two seal rings O1 and O2 are disposed on the inner wall of the discharging unit <NUM>, and abut the body <NUM>. The seal rings O1 and O2 are configured to avoid the gas leaking.

In this embodiment, the pressure of the pressurized gas, which is injected into the chamber C, is greater than or equal to <NUM> MPa. It should be noted that, in this embodiment, the rod <NUM> may move forward or backward in the body <NUM> by rotating through the corresponding thread structures (not shown) located on the rod <NUM> and the body <NUM>. Therefore, the volume of the chamber C may be changed to achieve the purpose of providing and adjusting different quantitative volumes for gas injection, wherein a seal ring O23 is disposed between the rod <NUM> and the inner wall of the body <NUM>.

Still referring to <FIG>, the driving mechanism T is pivotally connected to the casing S and the gas storage unit <NUM>. The driving mechanism T may be pressed by an external force to rotate relative to the casing S, and thereby the gas storage unit <NUM> is driven to move in the discharging unit <NUM>. Before the driving mechanism T is pressed, the gas storage unit <NUM> is located at a first position (<FIG>) relative to the discharging unit <NUM>. At this time, the opening of the gas channel <NUM> is located between the two seal rings O1 and O2, and is directly communicated with the vent hole V. Therefore, a pressurized gas may enter the chamber C of the gas storage unit <NUM> (shown as the arrow direction in <FIG>) through a gas injection opening G, the vent hole V and the gas channel <NUM> in order, wherein the gas injection opening G is located on the casing S, and the vent hole V is communicated with the gas injection opening G. Therefore, the pressurized gas injection device <NUM> is in a charged state.

Then, referring to <FIG> and <FIG>, <FIG> shows a cross-sectional view illustrating that the gas storage unit <NUM> moves from the first position to a second position relative to the discharging unit <NUM>. When users press the driving mechanism T, the gas storage unit <NUM> may move from the first position to the second position relative to the discharging unit <NUM>. At this time, since the opening <NUM> of the gas channel <NUM> moves to be located between the discharging opening <NUM> and the two seal rings O1 and O2, the pressurized gas in the chamber C may be released from the pressurized gas injection device <NUM> (shown as the arrow direction in <FIG>) through the gas channel <NUM> and the discharging opening <NUM> in order. Therefore, the pressurized gas injection device <NUM> is in an exhausted state.

Next, when users release the driving mechanism T, a biasing assembly <NUM> (such as a compressed spring) disposed between the gas storage unit <NUM> and the discharging unit <NUM> may provide an elastic force such that the gas storage unit <NUM> is driven to return from the second position (<FIG>) to the first position shown in <FIG> relative to the discharging unit <NUM>. The pressurized gas, with a pressure greater than or equal to <NUM> MPa, may directly penetrate the skin and reach dermis or deeper subcutaneous place through the aforementioned mechanical design. Therefore, good healing effect can be achieved.

Next, referring to <FIG>, the main difference between the pressurized gas injection device <NUM> in another embodiment of the present disclosure, not according to the claimed invention, and the pressurized gas injection device <NUM> shown in <FIG> and <FIG> is that, in this embodiment, the pressurized gas injection device <NUM> further includes a set of gas storage units (including a first gas storage unit 20A and a second gas storage unit 20B), which are located side by side, and fixed with each other. In addition, a housing H is further disposed outside the discharging unit <NUM>, the first gas storage unit 20A, and the second gas storage unit 20B. As shown in <FIG>, the discharging unit <NUM> has the discharging opening <NUM>, wherein a first gas injection channel <NUM> and a first gas discharging channel <NUM> are formed in the upper first gas storage unit 20A, and a second gas injection channel 21I' and a second gas discharging channel 21O' are formed in the lower second gas storage unit 20B. The two seal rings O1 and O2 are disposed on the outer surface of the discharging unit <NUM>, and the seal rings O1 and O2 abut the inner sidewalls of the first gas storage unit 20A and the second gas storage unit 20B. Therefore, the gas is avoided leaking from the gap between the discharging unit <NUM> and the gas storage units 20A and 20B.

Still referring to <FIG>, the pressurized gas injection device <NUM> further includes two first injection seal rings O3 and O4, two second injection seal rings O5 and O6, and a biasing assembly <NUM>. The housing H has a first gas injection opening H1 and a second gas injection opening H2, which are provided for respectively injecting a gas into a chamber C1 of the first gas storage unit 20A and a chamber C2 of the second gas storage unit 20B (shown as the arrow direction M in <FIG>). It should be appreciated that the two first injection seal rings O3 and O4 are disposed on the inner wall of the housing H, and correspond to the first gas injection opening H1 to avoid the gas leaking. The two second injection seal rings O5 and O6 are disposed on the inner wall of the housing H, and correspond to the second gas injection opening H2 to avoid the gas leaking. In addition, the biasing assembly <NUM> (such as a compressed spring) is disposed between the discharging unit <NUM> and the two gas storage units 20A and 20B.

It should be noted that when the biasing assembly <NUM> is in an initial state (as shown in <FIG>), the first gas storage units 20A and the second gas storage unit 20B are located at a first position relative to the discharging unit <NUM>. Also, the first gas injection channel 21I is located between the two first gas injection seal rings O3 and O4, and the second gas injection channel 21I' is located between the two second gas injection seal rings O5 and O6. That way, shown as the arrow direction M in <FIG>, a first pressurized gas may enter the chamber C1 of the first gas storage unit 20A through the first gas injection opening H1 and the first gas injection channel 21I in order. A second pressurized gas may enter the chamber C2 of the second gas storage unit 20B through the second gas injection opening H2 and the second gas injection channel 21I' in order.

Since the first gas discharging channel <NUM> and the second gas discharging channel 21O' are respectively located between the two seal rings O1 and O2, at this time, the gas is blocked and unable to be released from the pressurized gas injection device <NUM> through the discharging opening <NUM>. Therefore, the pressurized gas injection device <NUM> is in a charged state, wherein the first pressurized gas entering the chamber C1 through the first gas injection opening H1 is not mixed with the second pressurized gas entering the chamber C2 through the second gas injection opening H2. In this embodiment, each of the pressures of the first pressurized gas and the second pressurized gas may be greater than or equal to <NUM> MPa, and the pressure values of the first pressurized gas and the second pressurized gas may be different.

Then, referring to <FIG> is a cross-sectional view illustrating that the first gas storage unit 20A and the second gas storage unit 20B move from the first position to the second position relative to the discharging unit <NUM>. As shown in <FIG>, when the pressurized gas needs to be released to perform an injection, an external force may be applied through a trigger or another driving mechanism, and thereby the first gas storage unit 20A and the second gas storage unit 20B are driven to move from the first position towards the discharging opening <NUM> to the second position relative to the discharging unit <NUM>. That way, the biasing assembly <NUM> is further compressed. In this state, the first gas discharging channel <NUM> and the second gas discharging channel 21O' would move to be located between the two seal rings O1, O2, and the discharging opening <NUM>. Therefore, the first pressurized gas in the first gas storage unit 20A may be released from the pressurized gas injection device <NUM> through the first gas discharging channel <NUM> and the discharging opening <NUM> in order. Similarly, the second pressurized gas in the second gas storage unit 20B may also be released from the pressurized gas injection device <NUM> through the second gas discharging channel 21O' and the discharging opening <NUM> in order. Thus, the pressurized gas injection device <NUM> is in an exhausted state.

The pressurized gas, with a pressure greater than or equal to <NUM> MPa, may directly penetrate the skin and reach dermis or deeper subcutaneous place through the aforementioned mechanical design. Therefore, good healing effect can be achieved. On the other hand, different chambers C1 and C2 may be used by the first gas storage unit 20A and the second gas storage unit 20B to respectively store the first pressurized gas and the second pressurized gas. Therefore, different gases may be mixed together to serve as an injected medicine.

Referring to <FIG>, the pressurized gas injection device <NUM> in another embodiment of the present disclosure, not according to the claimed invention, mainly includes a discharging unit <NUM>, a gas storage unit <NUM>, two seal rings O1 and O2, a biasing assembly <NUM>, and a pin N. As shown in <FIG>, the discharging unit <NUM> has a discharging opening <NUM> and a temporary gas tank <NUM>. The temporary gas tank <NUM> is detachable and replaceable to change the size of the inner volume for achieving the purpose of adjusting and providing injected gases with different quantitative volumes. The gas storage unit <NUM> is movably connected to the discharging unit <NUM>, and the gas storage unit <NUM> includes a sliding member <NUM> and a pressurized gas tank <NUM>. It should be noted that the pressurized gas tank <NUM> is detachably connected to the sliding member <NUM>, and a gas channel <NUM> is formed in the sliding member <NUM>. The two seal rings O1 and O2 are disposed on the inner wall of the discharging unit <NUM>, and abut the outer surface of the gas storage unit <NUM> to avoid the gas leaking. The pin N is disposed on one side of the sliding member <NUM>, and is configured to pierce a seal (not shown), which is made of a metal or plastic material, on the pressurized gas tank <NUM>. Therefore, the pressurized gas may enter the gas channel <NUM> from the pressurized gas tank <NUM>.

Still referring to <FIG>, when the gas storage unit <NUM> is at a first position relative to the discharging unit <NUM>, the openings <NUM> of the gas channel <NUM> is located between the two seal rings O1 and O2. Accordingly, the pressurized gas in the pressurized gas tank <NUM> would pass through the gas channel <NUM> and enter the temporary gas tank <NUM> so that the pressurized gas injection device <NUM> is in a charged state. In this embodiment, the pressure of the pressurized gas may be greater than or equal to <NUM> MPa.

Next, referring to <FIG> is a cross-sectional view illustrating that the gas storage unit <NUM> in <FIG> moves from the first position to the second position relative to the discharging unit <NUM>. As shown in <FIG>, when the pressurized gas needs to be released to perform an injection, an external force may be applied to the pressurized gas tank <NUM> to push the gas storage unit <NUM> to move from the first position to the second position relative to the discharging unit <NUM>. At this time, since the opening <NUM> of the gas channel <NUM> near the temporary gas tank <NUM> is not located between the two seal rings O1 and O2, and is located between the two seal rings O1 and O2 and the temporary gas tank <NUM>, instead. Therefore, the pressurized gas in the temporary gas tank <NUM> may be released from the pressurized gas injection device <NUM> (shown as the arrow direction R in <FIG>) through the discharging opening <NUM>. Thus, the pressurized gas injection device <NUM> is in an exhausted state.

The pressurized gas, with a pressure greater than or equal to <NUM> MPa, can directly penetrate the skin and reach dermis or deeper subcutaneous place through the aforementioned mechanical design. Therefore, good healing effect can be achieved. On the other hand, the pressurized gas injection device <NUM> not is only convenient for carrying, but patients may also be able to change and inject the pressurized gas themselves by arranging the detachable pressurized gas tank <NUM>. Therefore, the convenience for treatment can be enhanced.

In addition, as shown in <FIG>, in another embodiment, the detachable pressurized gas tank <NUM> may not be used. Instead, the gas channel <NUM> in the sliding member <NUM> is communicated with an external large gas source U through pipelines U1 and U2. Therefore, the pressurized gas is continuously provided into the pressurized gas injection device <NUM>, wherein the sliding member <NUM> and the pipeline U1 may constitute the gas storage unit <NUM>.

Referring to <FIG>, in another embodiment of the present disclosure, not according to the claimed invention, the pressurized gas injection device <NUM> includes a discharging unit <NUM>, a major gas storage unit <NUM>, and a one-way valve <NUM>. The discharging unit <NUM> has a discharging opening <NUM>, and the major gas storage unit <NUM> is communicated with the discharging unit <NUM> through the one-way valve <NUM>, wherein the major gas storage unit <NUM> includes a first gas storage assembly <NUM>, a first sliding assembly <NUM>, and two first seal rings O1 and O2. A first gas channel <NUM> and a first chamber C are formed in the first gas storage assembly <NUM>, wherein the first chamber C may be configured to contain a pressurized gas, and the first sliding assembly <NUM> is movably disposed around the outside of the first gas storage assembly <NUM>. In addition, the two first seal rings O1 and O2 are disposed on the inner wall of the first sliding assembly <NUM>, and abut the outer surface of the first gas storage assembly <NUM> to avoid the gas leaking.

Still referring to <FIG>, when the first sliding assembly <NUM> is located at a first closed position relative to the first gas storage assembly <NUM>, the first gas channel <NUM> is closed because a portion of the first gas channel <NUM> near the discharging unit <NUM> is located between the two first seal rings O1, O2, and the discharging unit <NUM>. Therefore, the pressurized gas in the first chamber C may be prevented from entering the discharging unit <NUM> through the first channel <NUM> and the one-way valve <NUM>, and the pressurized gas injection device <NUM> may be in a charged state. In this embodiment, the pressure of the pressurized gas may be greater than or equal to <NUM> MPa. It should be noted that the discharging unit <NUM> may also be communicated with multiple gas storage unit in series to achieve the purpose of adjusting and providing different quantitative volumes of the injected gas. The detailed structure may be referred to the description in the following embodiments.

Next, referring to <FIG> is a cross-sectional view illustrating that the first sliding assembly <NUM> moves from the first closed position to a first open position relative to the first gas storage assembly <NUM>. As shown in <FIG>, when the pressurized gas needs to be released to perform an injection, the first sliding assembly <NUM> may move to the first open position relative to the first gas storage assembly <NUM>. Also, the first gas channel <NUM> is located between the two first seal rings O1 and O2. At this time, the pressurized gas in the first chamber C may enter the discharging unit <NUM> through the first gas channel <NUM> and the one-way valve <NUM>, and the pressurized gas is released from the pressurized gas injection device <NUM> through the discharging opening <NUM>. Meanwhile, the pressurized gas injection device <NUM> is in an exhausted state. The pressurized gas, with a pressure greater than or equal to <NUM> MPa, may directly penetrate the skin and reach dermis or deeper subcutaneous place through the aforementioned mechanical design. Therefore, good healing effect can be achieved.

Then, referring to <FIG>, in another embodiment of the present disclosure, the pressurized gas injection device <NUM> includes the discharging unit <NUM>, the major gas storage unit <NUM>, and the one-way valve <NUM>, and further includes an auxiliary gas storage unit <NUM>' and another one-way valve <NUM>. The auxiliary gas storage unit <NUM>' may be communicated with the major gas storage unit <NUM> through the one-way valve <NUM>. As shown in <FIG>, the auxiliary gas storage unit <NUM>' includes a second gas storage assembly <NUM>', a second sliding assembly <NUM>', and two second seal rings O1' and O2', wherein a second gas channel <NUM>' and a second chamber C' are formed in the second gas storage assembly <NUM>'. The second chamber C' may be configured to contain the pressurized gas. In this embodiment, the second sliding assembly <NUM>' is movably disposed around the outside of the second gas storage assembly <NUM>'. The two second seal rings O1' and O2' are disposed on the inner wall of the second sliding assembly <NUM>', and abut the outer surface of the second gas storage assembly <NUM>' to avoid the gas leaking.

Still referring to <FIG>, when the second sliding assembly <NUM>' is located at a second closed position relative to the second gas storage assembly <NUM>', the second gas channel <NUM>' is closed because a portion of the second gas channel <NUM>' near the major gas storage unit <NUM> is located between the two second seal rings O1', O2', and the major gas storage unit <NUM>. Therefore, the pressurized gas in the second chamber C' may be prevented from entering the major gas storage unit <NUM> through the second gas channel <NUM>' and the one-way valve <NUM>.

Next, referring to <FIG> is a cross-sectional view illustrating that the second sliding assembly <NUM>' moves from the second closed position to a second open position relative to the second gas storage assembly <NUM>'. As shown in <FIG>, when the second sliding assembly <NUM>' moves to the second open position relative to the second gas storage assembly <NUM>', the second gas channel <NUM>' will be located between the two second seal rings O1' and O2'. Accordingly, the pressurized gas in the second chamber C' may enter the major gas storage unit <NUM> through the second channel <NUM>' and the one-way valve <NUM>. Therefore, the pressurized gas injection device <NUM> is in a charged state. Similarly, when the pressurized gas needs to be released to perform an injection, the first sliding assembly <NUM> may move to the first open position (as shown in <FIG>) relative to the first gas storage assembly <NUM> so that the pressurized gas in the first chamber C may enter the discharging unit <NUM> through the first gas channel <NUM> and the one-way valve <NUM>. Thus, the pressurized gas is released from the pressurized gas injection device <NUM> through the discharging opening <NUM>. In this embodiment, the pressure of the pressurized gas is greater than or equal to <NUM> MPa.

Referring to <FIG>, the main difference between this embodiment and the embodiment shown in <FIG> is that the pressurized gas injection device <NUM> further includes two auxiliary gas storage units <NUM>' communicated with each other through the one-way valve <NUM>. As shown in <FIG>, when both the second sliding assemblys <NUM>' of the two auxiliary gas storage units <NUM>' are located at the second open position relative the second gas storage assembly <NUM>', the pressurized gas injection device <NUM> is in a charged state. In addition, the total volume of the pressurized gas contained in the pressurized gas injection device <NUM> in <FIG> may be greater than that in the pressurized gas injection device <NUM> in <FIG>. In other words, in this embodiment, the pressurized gases with different volumes may be selectively provided for injection by increasing or adjusting the quantity of the auxiliary gas storage units <NUM>', and switching the second sliding assembly <NUM>' between the closed or open positions.

Then, referring to <FIG>, in another embodiment of the present disclosure, not according to the claimed invention, the pressurized gas injection device <NUM> includes a discharging unit <NUM>, a gas storage unit <NUM>, a biasing assembly <NUM>, a first seal ring O1, a second seal ring O2, two third seal rings O3, and two fourth seal rings O4. The discharging unit <NUM> has a discharging opening <NUM> and a protruding portion <NUM>. The gas storage unit <NUM> includes a gap adjusting component <NUM> and a hollow core tube <NUM>. As shown in <FIG>, the core tube <NUM> is disposed in the discharging unit <NUM>, and may slide relative to the discharging unit <NUM>, wherein the protruding portion <NUM> extends into the core tube <NUM>, and the core tube <NUM> has a vent hole V corresponding to the discharging opening <NUM>.

It should be noted that the gap adjusting component <NUM> is movably disposed in the core tube <NUM>, and a gas channel <NUM> is formed in the gap adjusting component <NUM>. The biasing assembly <NUM> is disposed between the discharging unit <NUM> and the core tube <NUM>. The first seal ring O1 is disposed around the protruding portion <NUM>, and abuts the core tube <NUM>. The second seal ring O2 is disposed on the gap adjusting component <NUM>, and abuts the core tube <NUM>. In addition, an exit E of the gas channel <NUM> faces the core tube <NUM>, and is located between the first seal ring O1 and the second seal ring O2. The two third seal rings O3 are disposed on the core tube <NUM>, abut the discharging unit <NUM>, and are located between the biasing assembly <NUM> and the vent hole V. On the other hand, the two fourth seal rings O4 are disposed on the discharging unit <NUM>, and abut the outer surface of the core tube <NUM>. The discharging opening <NUM> is located between the two third seal rings O3 and the two fourth seal rings O4.

Still referring to <FIG>, when an external force is applied to the biasing assembly <NUM> (for example, a push rod <NUM> at the bottom of the core tube <NUM> is pressed by a hand), and the biasing assembly <NUM> is in a compressed state, the core tube <NUM> is located at a first position relative to the discharging unit <NUM>. At this time, the first seal ring O1 is located between the vent hole V and the exit E, and the vent hole V is located between the first seal ring O1 and the two third seal rings O3. Therefore, the gas channel <NUM> can be prevented from communicating with the vent hole V to avoid the pressurized gas in the gas channel <NUM> leaking through the vent hole V, and the pressurized gas injection device <NUM> is in a charged state. In this embodiment, the pressure of the pressurized gas may be greater than or equal to <NUM> MPa.

Next, referring to <FIG> is a cross-sectional schematic view illustrating that the core tube <NUM> moves from the first position to the second position relative to the discharging unit <NUM>. As shown in <FIG>, after the external force applied to the push rod <NUM> at the bottom of the core tube <NUM> is released, the biasing assembly <NUM> (such as a compressed spring) may return to a released state by its elastic force, and the elastic force may drive the core tube <NUM> to move from the first position to the second position relative to the discharging unit <NUM>. It should be noted that, at this time, the position of the vent hole V is between the first seal ring O1 and the second seal ring O2, and the position of the vent hole V is concurrently between the two third seal rings O3 and the two fourth seal rings O4. Therefore, the pressurized gas injected from the entrance I into the gas channel <NUM> may pass through the gap adjusting component <NUM> and the exit E, and reach the vent hole V. Sequentially, the pressurized gas may further be released from the pressurized gas injection device <NUM> through the vent hole V and the discharging opening <NUM> in order so that the pressurized gas is in an exhausted state. The pressurized gas, with a pressure greater than or equal to <NUM> MPa, may directly penetrate the skin and reach dermis or deeper subcutaneous place through the aforementioned mechanical design. Therefore, good healing effect can be achieved.

Referring to <FIG> is a cross-sectional schematic view illustrating that the core tube <NUM> further moves to a third position relative to the discharging unit <NUM>. As shown in <FIG>, when the biasing assembly <NUM> further drives the core tube <NUM> to slide from the second position to the third position relative to the discharging unit <NUM> through the elastic force, the position of one of the third seal rings O3/the fourth seal rings O4 is between the vent hole V and the discharging opening <NUM>. Accordingly, the pressurized gas in the vent hole V may be prevented from flowing towards the discharging opening <NUM>. It is shown in <FIG>, <FIG>, and <FIG> that the second position (<FIG>) is between the first position (<FIG>) and the third position (<FIG>). When the core tube <NUM> slides to the third position, the exhausted state of the pressurized gas injection device <NUM> ends. Until the push rod <NUM> is pushed back and compresses the biasing assembly <NUM>, the core tube <NUM> returns to the state shown in <FIG> relative to the discharging unit <NUM>, facilitating to charge the pressurized gas injection device <NUM> again. In this embodiment, because the multistage flow control may be performed by arranging the biasing assembly and different seal rings, the effect of high pressure and constant quantity injection can be achieved. Thus, the flexibility and convenience in use can be enhanced.

Then, referring to <FIG> is a cross-sectional view illustrating that the core tube <NUM> of the gas storage unit <NUM> is located at the first position relative to the discharging unit <NUM>, the gap adjustment component <NUM> rotates to enter the discharging unit <NUM> through the thread structure (not shown), and a minimum gap is between the gap adjustment component <NUM> and the protruding portion <NUM>. As shown in <FIG>, when the biasing assembly <NUM> is in a compressed state, the core tube <NUM> is located at the first position relative to the discharging unit <NUM>. Meanwhile, the first seal ring O1 is located between the vent hole V and the exit E of the gas channel <NUM>, and thereby the pressurized gas may be avoided entering the vent hole V from the gas channel <NUM>.

Referring to <FIG> is a cross-sectional view illustrating that the core tube <NUM> in <FIG> moves from the first position to the second position relative to the discharging unit <NUM>. As shown in <FIG>, the biasing assembly <NUM> is in a released state, and the core tube <NUM> is driven to move to the second position relative to the discharging unit <NUM> by the elastic force. Since the vent hole V is between the first seal ring O1 and the second seal ring O2, and the position of the vent hole V is also between the two third seal rings O3 and the two fourth seal rings O4, the pressurized gas may inject from the entrance I of the gas channel <NUM> into the gap adjusting component <NUM>. The pressurized gas is released from the pressurized gas injection device <NUM> through and the vent hole V and the discharging opening <NUM> in order. Therefore, the pressurized gas injection device <NUM> is in an exhausted state.

Next, referring to <FIG> is a cross-sectional view illustrating that the core tube <NUM> in <FIG> continuously moves to a fourth position relative to the discharging unit <NUM> by releasing the biasing assembly <NUM>. As shown in <FIG>, the gap between the gap adjusting component <NUM> and the protruding portion <NUM> has been adjusted to a minimum gap. Therefore, the distance between the first seal ring O1 and the second seal ring O2 is also shortened. Accordingly, in the process that the biasing assembly <NUM> further drives the core tube <NUM> to slide from the second position to the fourth position relative to the discharging unit <NUM>, the vent hole V may be just shortly located between the second seal ring O2 and the fourth seal rings O4. Therefore, the required time communicating the vent hole V with the gas channel can be reduced to avoid the pressurized gas in the gas channel <NUM> excessively flowing out of the discharging opening <NUM>. That is, at this time, the pressurized gas injection device <NUM> is in a discharging ending state. As set forth above, in this embodiment, the time releasing the pressurized gas is selectively set by adjusting the gap between the gap adjusting component <NUM> and the protruding portion <NUM>. That way, a good control direct to the discharging amount and the injection time of the gas can be performed.

Referring to <FIG> is a cross-sectional view illustrating that the core tube <NUM> in <FIG> moves to the third position, which is shown in <FIG>, relative to the discharging unit <NUM>. It is shown in <FIG> that when the biasing assembly <NUM> further drives the core tube <NUM> to slide from the second position to the third position relative to the discharging unit <NUM>, one of the fourth seal rings O4 is located between the vent hole V and the discharging opening <NUM>. Therefore, the pressurized gas in the vent hole V may be prevented from flowing towards the discharging opening <NUM>. Meanwhile, the pressurized gas injection device <NUM> is still in a discharging ending state, and the pressurized gas injection device <NUM> may be charged again until the biasing assembly <NUM> is compressed again and the core tube <NUM> is driven to return to the first position relative to the discharging unit <NUM>.

Then, referring to the embodiment shown in <FIG>, not according to the claimed invention, the difference between the embodiments shown in <FIG> and <FIG> is that no gas injection opening G is disposed in the casing S, wherein the pressurized gas may be portably used by mounting a small gas tank (such as a bullet-shaped gas tank <NUM> shown in <FIG>) in the casing S.

<FIG> are perspective views illustrating nozzles P in accordance with different embodiments of the present disclosure, wherein <FIG> are cross-sectional views. Various types of the nozzles P shown in <FIG> may all be applied to any type of the aforementioned pressurized gas injection devices <NUM>. One side of each of the nozzles P may be communicated with the discharging opening <NUM> of the discharging unit <NUM> through the one-way valve, and the other side is configured to contact skin of the patient. Therefore, the pressurized gas may be injected into the body of the patient from the discharging opening <NUM>. As shown in <FIG>, in this embodiment, the nozzle P has a plurality of adjustable gas tubes such that the nozzle P may be fully attached to the surface of the skin of the patient, achieving effective contact. As shown in <FIG>, a funnel-shaped structure may be formed on the inner side of the nozzle P, and is configured to evenly inject the pressurized gas to the affected part in a large area, wherein single gas tube (<FIG>) or a plurality of gas tubes (<FIG>) may be formed in the funnel-shaped structure. Moreover, as shown in <FIG>, the nozzle P may also have a cylindrical structure to precisely inject the pressurized gas to the affected part. Finally, as shown in <FIG>, the nozzle P further includes a longitudinal flexible film or a circular patch configured to cover the affected part. Therefore, the pressurized gas may be prevented from leaking. It should be appreciated that when the gas passes through the nozzles P shown in <FIG>, a tremor may be generated at the place contacting the skin.

In the pressurized gas injection devices <NUM> of aforementioned various embodiments of the present disclosure, the gas storage unit <NUM> is movable relative to the discharging unit <NUM>, and the pressurized gas may be driven to penetrate skin and reach subcutaneous tissue. Therefore, good healing effect can be achieved. On the other hand, the quantity of the auxiliary gas storage units <NUM>' may also be properly adjusted, and the auxiliary gas storage units <NUM>' are controlled to be located at the closed or open position. That way, pressurized gases with different volumes are selectively provided so that volume control, which is direct to the injected gas, can be performed. In addition, the pressurized gas may be selectively set to be released in a specific period by adjusting the gap between the gap adjusting component <NUM> and the protruding portion <NUM>. Thus, a good control, which is the injection time and the discharging amount of the gas, may be performed. On the other hand, in the present disclosure, a disposable bullet-shaped gas tank may also be adapted as a predetermined volume for injection. The flexibility and convenience in use can be significantly enhanced by changing bullet-shaped gas tank with different volumes to adjust the required gas volume.

As set forth above, an adjustable quantitative high pressure gas injection device and method are provided in the present disclosure. The gas may be from one or more gas source, and may include at least one of hydrogen, oxygen, nitrogen, carbon dioxide, ozone, and nitrous oxide, and the gas pressure is greater than <NUM> MPa. The gas may directly be communicated with the gas tank in the mechanism, or an external gas source. The gas may be charged to a predetermined or volume-adjustable gas storage chamber through valves corresponding to each of the gases. Alternatively, the valve may be a valve that may adjust valve-opening time, and the gas storage chamber is not required. After released, the gas passes through a nozzle selected based on the injection depth and range, wherein a one-way valve is disposed between the nozzle and the body of the mechanism to avoid backflow and contamination. The operator may exert a proper strength to human body parts to be affected. After the gas is injected, the mechanism returns to its original state by an elastic device in the mechanism so that the mechanism is ready to be used for the next injection.

Although the present disclosure has been described in the form of some specific embodiments as above, however, those are not intended to limit the present disclosure.

Claim 1:
A pressurized gas injection device (<NUM>) suitable for injecting a medicine in form of a pressurized gas, comprising:
a discharging unit (<NUM>) having a discharging opening (<NUM>) and a vent hole (V);
a gas storage unit (<NUM>) movably disposed in the discharging unit (<NUM>), wherein a gas channel (<NUM>) is formed in the gas storage unit (<NUM>) and a chamber (C) connected to the gas channel (<NUM>), wherein the gas storage unit (<NUM>) comprises a hollow body and a rod, the rod being inserted into the body in a position-adjustable manner such that a volume of the chamber (C) is adjustable, and the chamber (C), which is configured to store the pressurized gas, is formed between the body and the rod; and
two seal rings (O1, O2) disposed on an inner wall of the discharging unit (<NUM>), wherein the seal rings (O1, O2) abut the gas storage unit (<NUM>);
wherein the pressurized gas injection device (<NUM>) is configured such that:
when the gas storage unit (<NUM>) is located at a first position relative to the discharging unit (<NUM>), a pressurized gas is allowed to enter the chamber (C) through the vent hole (V) and the gas channel (<NUM>) in that order, and the gas channel (<NUM>) is located between the seal rings (O1, O2); and
when the gas storage unit (<NUM>) moves from the first position to a second position relative to the discharging unit (<NUM>), the gas channel (<NUM>) moves to be located between the discharging opening (<NUM>) and one of the seal rings (O1, O2) that is closest to the discharging opening (<NUM>) so that the pressurized gas in the chamber (C) is released from the pressurized gas injection device (<NUM>) so as to penetrate the skin of a user through the gas channel (<NUM>) and the discharging opening (<NUM>) in that order, wherein the pressure of the pressurized gas is greater than or equal to <NUM> MPa.