KR20010044407A - Cannula bars for tissue removal using fluid jet and apparatus adopting the same - Google Patents

Abstract

PURPOSE: Disclosed is an operation bar for removing fat tissue using water jet to prevent damage of other tissue out of constant validity area by countervailing destructive power by flowing together spraying liquid jetted from plural nozzles in fixed position. CONSTITUTION: The operation bar for removing tissue using waterjet comprises a rectangular probe(40) being formed with afferent duct to provide spraying liquid and suction pipe to discharge by inhaling broken tissue; plural spraying nozzles(41) being formed in the probe(40) to destroy fat tissue by jetting spraying liquid; at least one inhalation hole(42) or higher being formed in the probe(40) by connecting with the suction pipe to inhale the broken tissue; the spraying nozzle(41) for flowing together the spraying liquid jetted from at least two spraying nozzles or higher.

Description

Cannula for tissue removal using water jet and device employing it {CANNULA BARS FOR TISSUE REMOVAL USING FLUID JET AND APPARATUS ADOPTING THE SAME}

The present invention relates to a surgical rod for removing tissue using a water jet, and more particularly, to remove tissue having a structure that is improved to prevent tissue damage over a predetermined area by waterjets sprayed from the nozzles being joined to each other to cancel the breaking force. It relates to a surgical rod and a surgical device using the same.

Waterjet is increasingly used for washing of vehicles and tableware and cutting of metal, stone, wood, meat and the like. The waterjet has been improved for medical use due to the fact that no heat is generated or the smooth cut surface is used to cut or cut skin or bone.

U. S. Patent No. 5,620, 414 to Campbell discloses a surgical incision device using a waterjet. U. S. Patent No. 5,037, 431 to Summers et al. Also discloses a device for destroying a tumor site with a water jet and inhaling it. In particular, US Pat. No. 5,947,988, issued to Smith, details the procedure for removing tissue and the nozzle structure formed thereon.

On the other hand, the obesity population is gradually increasing due to abundant diet and less physical activity of people than in the past. Obesity is clinically associated with high blood pressure, diabetes, hyperlipidemia and thrombosis, which is a problem not only for you but also for society. In addition to the above medical aspects, attempts to lose weight due to sociocultural influences that favor skinny women over obese women are being vigorously attempted through diet, drugs, exercise, etc., and the abdomen, hips, thighs, Surgical methods are considered for cosmetic purposes for the fat accumulated locally in the calf, arms and the like. Surgery for liposuction, that is, liposuction, is increasing day by day.

Recently, there have been attempts to apply the above-described medical incisions to such liposuction. However, the general-purpose waterjet devices are not suitable for the fat removal procedure because of the characteristics thereof. First, the general outline of the liposuction will be described.

1A shows the subcutaneous tissue structure of the body. Referring to the drawings, the subcutaneous layer between the skin (2) and the muscle (3) is composed of fat (1), blood vessels, nerves, fibrous tissue (4), etc., where the fat that occupies most of the volume of fat cells Forms fat lobules visible to the naked eye, wrapped in thin fibrous tissue. The fat lobule grows in size as obesity progresses, and the fibrous tissue that wraps it becomes relatively thin. Each fat lobule is connected to fine nerves and blood vessels. In obese people, fat cells grow and thicken the subcutaneous layer, mainly in the abdomen for men and in the hips and thighs for women. The fat (1) itself is a liquid jelly, the physical strength is weak compared to the skin (2), muscle (3) and blood vessels, nerves, fibrous tissues (4) and the like, by selectively destroying fat using waterjet to remove Liposuction is relatively easy.

Currently, liposuction consists of three stages: subcutaneous anesthesia, and fat destruction and inhalation. Local anesthesia is currently used as a Tumescent technique. First, the skin (2) of the fat area to be removed is incised by about 0.5 to 1.0 cm and then, in normal saline, epinephrine and sodium bicarbonate. ), Klein's Solution mixed with lidocane, etc., is injected into the subcutaneous layer. The Klein solution is injected in an amount corresponding to about three times the amount of fat to be removed, and the action of the drug causes hemostatic action and local anesthesia of the subcutaneous layer. In this state, the removal rod 10 is inserted into the subcutaneous fat layer through the incision site to destroy the fat 1, and the destroyed fat is sucked out again. This state of fat destruction and removal is schematically illustrated in FIG. 1B.

On the other hand, in the ultrasonic liposuction method that is most commonly used at present, the removal rod 10 breaks fat by ultrasonic vibration and melts the fat of the contact portion with heat generated therefrom. However, in the process of fat destruction by the mechanical vibration of the removal rod, the nerve, blood vessels and fibrous tissues 4 are destroyed regardless of fat, and the heat generated therefrom may damage other tissues such as skin and muscles in addition to the subcutaneous layer. .

The present inventors attempted to use the waterjet surgical rod shown in the above-mentioned documents as the removal rod, not ultrasonic vibration. If the water jet method is adopted, proper control of the spraying water pressure can destroy and remove fat without damaging the fibrous tissue, nerves and blood vessels. However, even in this case, it is difficult to precisely control the water pressure so that only fat is destroyed, and there is a risk that the water jet penetrates the weak area of the tissue and damages the unwanted tissue, and the water jet pressure is far from the nozzle point where it is sprayed. Increasingly inversely lowered, it is difficult to pinpoint the point where fat is destroyed. Therefore, even when using the waterjet method, it was found that there is a limit in preventing damage to tissues other than fat.

The present invention was devised in view of the above problems, and in the tissue rod using a waterjet method, the tissues are only destroyed within a certain effective area by allowing the injection liquids injected from the plurality of nozzles to join each other at a predetermined point. However, the purpose of the present invention is to provide a tissue removal surgical rod and a tissue removal surgical device employing the same designed to prevent damage to other tissues as well as to increase the precision of the procedure by preventing the tissue from being destroyed in the area beyond the point. .

Figures 1a and 1b is a perspective view showing a portion of the subcutaneous tissue and liposuction process.

Figure 2 is a schematic view showing the configuration of a tissue removal procedure apparatus according to a preferred embodiment of the present invention.

Figure 3 is a perspective view schematically showing the configuration of the surgical rod for removing tissue according to an embodiment of the present invention.

Figure 4 is a side cross-sectional view of the surgical rod of Figure 3;

5 is a cross-sectional view taken along the line V-V of FIG. 4.

6 and 7 are a side view and a plan view showing a surgical rod for removing tissue according to another embodiment of the present invention.

Figure 8 is a side view of a surgical rod for tissue removal according to another embodiment of the present invention.

Figure 9 is a side view of a surgical rod for tissue removal according to another embodiment of the present invention.

Figure 10 is a side view of a surgical rod for tissue removal according to another embodiment of the present invention.

11 is a graph showing a comparison of the injection water pressure according to the present invention and the prior art.

In order to achieve the above object, a rectangular probe having an inlet pipe for supplying the injection liquid according to the present invention, and an absorption tube for sucking and discharging the destroyed tissue and the injection liquid; A plurality of injection nozzles formed in the probe to communicate with the water inlet pipe and to spray the supplied injection liquid to destroy tissue; And at least one suction port communicating with the absorption tube and formed in the probe to suck the damaged tissue and the injection liquid, wherein the injection nozzle comprises injection liquids injected from at least two injection nozzles. A surgical rod for removing tissue is provided.

Preferably, the water inlet pipe is smaller than the diameter of the absorber pipe and is formed on one inner side of the absorber pipe.

The injection nozzle may be formed in at least one row in the longitudinal direction on both sides of the probe.

In addition, the injection nozzle may be formed at least one row in an annular shape along the circumferential surface of the probe.

As another example, the injection nozzles may be formed at the front end of the probe and the injection liquids injected therefrom may merge with each other from the front.

Preferably, the point where the injection liquid joins is suitably 2 to 10 mm from the injection nozzle.

According to another aspect of the invention, the rectangular probe having an inlet pipe for supplying the injection liquid, and an absorption tube for sucking and discharging the broken tissue and the injection liquid; A plurality of injection nozzles formed in the probe to communicate with the water inlet pipe and to spray the supplied injection liquid to destroy tissue; At least one suction port formed in the probe in communication with the absorption tube to suck the damaged tissue and the injection liquid; A solution tank containing a spray solution; A pressurizing pump for pressurizing and supplying the solution contained in the solution tank to the water inlet pipe; A suction chamber for storing the destroyed and discharged tissue; And a vacuum pump for suctioning the damaged tissue to the suction chamber through the absorption tube, wherein the injection nozzle is provided with a tissue removal procedure device configured to allow injection liquids injected from at least two or more injection nozzles to join each other. do.

Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings. Prior to this, terms or words used in the specification and claims should not be construed as having a conventional or dictionary meaning, and the inventors should properly explain the concept of terms in order to best explain their own invention. Based on the principle that can be defined, it should be interpreted as meaning and concept corresponding to the technical idea of the present invention. Therefore, the embodiments described in the specification and the drawings shown in the drawings are only the most preferred embodiment of the present invention and do not represent all of the technical idea of the present invention, various modifications that can be replaced at the time of the present application It should be understood that there may be equivalents and variations. In addition, the present invention will be described by applying a tissue rod for liposuction. However, the device of the present invention is not limited to this and should be considered to be used as a general surgical instrument for tissue incision and removal.

Figure 2 shows a tissue removal procedure apparatus according to a preferred embodiment of the present invention. As shown, the device of the present invention consists of a surgical rod 20 and the body 50. The surgical rod 20 is a portion in which the injection liquid is injected to directly destroy and inhale the body tissue, and the main body 50 supplies a driving source for supplying the injection liquid pressurized by the surgical rod and at the same time sucking and discharging the destroyed tissue. It is part to provide.

Referring to FIG. 3 only showing the structure of the surgical rod 20, the surgical rod 20 includes a probe 40 to which a water jet is sprayed and a handle 30 to support the probe 40. The operator is used to hold the handle 30, the handle 30, the suction to adjust the suction pressure of the injection pressure control switch 31 and / or the vacuum pump for adjusting the injection pressure of the water jet as described below Pressure control switch 32 is provided. As an alternative, the control switches 31 and 32 may be provided in the main body 50 rather than the surgical rod 20. An electrode terminal 33 is provided on the surgical rod 30 for the operation of the control switches 31 and 32, and the electrode terminal 33 is a connection terminal (not shown) provided at an end of the cable 60. Connected to the power supply.

The probe 40 is a rectangular long hollow tube, as shown in FIGS. 4 and 5, in which an inlet tube 40a is embedded in an absorption tube 40b having a larger diameter. The inlet pipe 40a is a pipe to which a high pressure injection liquid is supplied, and a plurality of injection nozzles 41 are formed at the front end thereof. The absorption tube 40b is a tube for sucking and discharging the destroyed tissue and the sprayed solution, and at least one suction port 42 is formed. Preferably, the water supply pipe 40a is provided on one inner side of the absorption pipe 40b so as to secure the passage of the absorption pipe 40b so that the destroyed tissue can be easily discharged.

The inlet pipe 40a preferably has a larger diameter reaching the end of the probe 40 and the injection nozzle 41 is formed in this area. According to a feature of the invention, the injection nozzle 41 is formed so that the injection liquids injected therefrom collide with each other.

6 and 7 one of such embodiments is shown. Referring to the drawings, injection nozzles 41a are formed on both sides of the probe 40 in parallel in the longitudinal direction. Here, the injection nozzles 41a are formed to be inclined in cross section so that the injection liquid injected from the adjacent nozzles merges at a predetermined confluence point C. In this embodiment, the injection liquids injected from a pair of adjacent injection nozzles 41a are respectively joined. The dashed line in the figure schematically shows the trajectory of the injection liquid.

When the injection nozzle having such a configuration is provided, as shown by the dotted line in Fig. 7, the effect of the hydraulic pressure supplied is intact in the effective destruction area E from the injection nozzle 41a to the confluence point C. Destruction occurs, but in areas outside the confluence point (C), the water pressure drops significantly and no tissue destruction occurs.

Referring to FIG. 8, which is another embodiment, the injection nozzle 41b is configured such that the injection liquids sprayed from three or more injection nozzles 41b merge with each other.

In addition, as illustrated in FIG. 9, the injection nozzles 41c may be formed in an annular shape along the circumferential direction of the probe 40, and the injection liquids injected therefrom may be joined to each other.

Furthermore, according to FIG. 10, which shows another embodiment, a plurality of injection nozzles 41d may be formed at the front end portion of the probe 40, and the injection liquids injected therefrom may merge with each other from the front.

In the present specification and drawings, the injection nozzle is formed in one or two or more lines along the long direction and the circumferential direction of the probe 40 or at the end of the probe 40, but the formation position is not limited by the present invention. . The technical idea of the present invention is that the destructive force of the waterjet is canceled by the confluence of the injection liquid injected from the injection nozzle, so the position and shape of the injection nozzle can be modified by those skilled in the art. It is possible.

The suction port 42 communicating with the absorption pipe 40b is preferably larger in diameter than the spray nozzle so as to be suitable for sucking up the damaged tissue, and the formation position and shape of the suction port 40b are also shown in the embodiment and drawings. It is not limited, and is formed in an appropriate position so that it can communicate with the absorption tube 40b.

Referring back to FIG. 2, the surgical rod 20 is connected to the main body 50 through a cable 60, and preferably, the surgical rod 20 can use various types of probes 40. Is removable). At this time, the surgical rod 20 is provided with an inlet (34 in FIG. 3) and the suction terminal 35 through the absorption tube 40b to the water inlet pipe (40a) corresponding to when the cable 60 is coupled to Connected to conduits (not shown). As an alternative, the probe 40 may be detachably configured to the handle 30 so that the probe may be replaced as necessary. Since such a configuration is common, a detailed description thereof will be omitted.

In the cable 60, an inlet conduit and an intake conduit (not shown) connected to the inlet pipe 40a and the absorber pipe 40b of the surgical rod 20 are respectively built, and these are respectively pressurized pumps 51 and It is connected to the suction chamber 54.

The pressure pump 51 is connected to the solution tank 52 containing the injection solution, such as the above-mentioned klein solution, and pressurizes the solution supplied from it to supply to the inlet pipe 40a.

The suction chamber 54 is a container which is connected to the vacuum pump 53 and sucks and stores the tissue and the sprayed solution, which are destroyed by the driving source, through the absorption tube 40b.

At least one or more control valves 55 and 56 may be installed in the passages between the pressure pump 51 and the solution tank 52 and the vacuum pump 53 and the suction chamber 54, respectively.

Then, the operation of the device according to the present invention having the above configuration will be described in relation to liposuction using the two-method technique.

First, the skin 2 of the fat region to be removed is cut about 0.5 to 1.0 cm, and then the probe 40 of the surgical rod 20 is inserted into the subcutaneous fat layer through the skin incision. At this time, the solution tank 52 contains a klein solution having the above-described composition. Initially, the cline solution should be injected into fat for anesthesia and hemostasis, so that the injection pressure is set to low pressure by operating the injection pressure control switch 31. At this time, the nozzle of the probe 40 may use a relatively large diameter. According to a preferred embodiment of the present invention, the injection pressure is adjustable in the range of 0 to 100 bar, the cline solution is appropriate to inject at 5 bar or less.

Therefore, while the pressure pump 51 is operated, the cline solution contained in the solution tank 52 is ejected to the injection nozzle 41 through the inlet pipe 40a and injected into the subcutaneous fat layer. Three times the amount of klein solution to be removed is injected and after a certain time, hemostasis and local anesthesia occur.

For full fat removal, the injection pressure control switch 31 is adjusted to a pressure suitable for fat destruction while the vacuum pump 53 is operated. According to the experiment of the present inventors, the injection pressure for fat destruction is suitably about 5 to 100 bar, more preferably about 5 to 50 bar. At the same time, it is possible to adjust the pressure of suctioning the fat broken down by the suction pressure control switch 32 and the injected solution into the suction chamber 54.

In the state where the pressure adjustment is completed, the operator destroys fat and inhales at the same time while reciprocating back and forth the probe 40 by hand. At this time, the injection liquid injected from the injection nozzle 41 in accordance with the present invention is joined at the point (C) as shown in Figure 7 because the water pressure is sharply lowered because the fat is destroyed in the effective destruction area (E) In other areas no destruction occurs. According to the present inventors, it is preferable that the effective fracture area E is 2 to 10 mm.

Subsequently, the destroyed fat and the injected solution are sucked into the absorption pipe 40b through the suction port 42 and then stored in the suction chamber 54. Therefore, the destruction and removal of fat are performed continuously.

According to the present invention, since the injection liquid injected from the injection nozzle is joined at a predetermined point, the destruction and removal of tissue occurs only in the effective destruction area E, and thus damage or destruction of other tissues can be prevented. This effect is more apparent from the graph shown in FIG.

As can be seen from the graph, in the case of the jet nozzle according to the prior art, the water pressure decreases inversely as the distance from the nozzle inlet (O) increases. Therefore, the effective destruction area for destroying the tissue is set continuously and therefore the tissue cannot be removed precisely. However, in the case of the present invention, the jetting liquid jetted from the nozzles merges at the confluence point C and collides with each other, so that the water pressure drops rapidly. Therefore, the discontinuous limited effective destruction area (E) exists so that the destruction and removal of the tissues can be more precisely controlled, thereby preventing damage to tissues other than tissues requiring removal such as fat.

Furthermore, the present invention can be used not only for fat destruction for liposuction but also for destroying and removing tissue in various procedures by appropriately adjusting the water pressure to suit the purpose.

Claims (9)

A rectangular probe 40 having an inlet tube 40a for supplying the injection liquid and an absorber tube 40b for sucking and discharging the destroyed tissue; A plurality of injection nozzles 41 formed in the probe for communicating with the water inlet pipe and spraying the supplied injection liquid to destroy tissue; And And at least one suction port 42 formed in the probe in communication with the absorption tube to suck the damaged tissue. The injection nozzle, the tissue removal procedure, characterized in that the injection liquid injected from at least two or more injection nozzles are joined to each other. The surgical rod of claim 1, wherein the water inlet tube is smaller than the diameter of the absorber tube and is formed on an inner surface of the absorber tube. The method of claim 1, wherein the injection nozzle is a tissue removal procedure, characterized in that formed at least one row in the longitudinal direction on both sides of the probe. The surgical rod of claim 1, wherein the injection nozzle is formed at least one row in an annular shape along the circumferential surface of the probe. The surgical rod of claim 1, wherein the injection nozzle is formed at the front end of the probe and the injection liquids injected therefrom merge with each other from the front. The surgical rod for removing tissue according to claim 1, wherein the injection point of the injection liquid is 5 to 10 mm from the injection nozzle. According to any one of claims 1 to 6, further comprising a handle for supporting the probe 30, the handle is injected to adjust the water pressure of the injection liquid supplied to the inlet pipe and injected into the injection nozzle Pressure bar for removing the tissue, characterized in that the pressure control switch 31 is provided. A rectangular probe 40 having an inlet tube 40a for supplying the injection liquid and an absorber tube 40b for sucking and discharging the destroyed tissue; A plurality of injection nozzles 41 formed in the probe for communicating with the water inlet pipe and spraying the supplied injection liquid to destroy tissue; At least one suction port 42 formed in the probe in communication with the absorption tube to suck the damaged tissue; A solution tank 52 containing a spray solution; A pressure pump 51 for supplying the solution contained in the solution tank 52 by pressurizing the solution into the water supply pipe; A suction chamber (54) for storing the destroyed and discharged tissue; And It includes a vacuum pump 53 for sucking the damaged tissue into the suction chamber through the absorption tube, The injection nozzle is a tissue removal treatment device, characterized in that the injection liquid from at least two or more injection nozzles are formed to join each other. The method of claim 8, further comprising a handle for supporting the probe 30, the handle is characterized in that the injection pressure control switch 31 for adjusting the water pressure of the injection liquid by the pressure pump is provided with a tissue Removal device.