JPS6213604Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Technical Field of the Invention) The present invention relates to medical equipment, and more specifically, among cutting means such as scalpels used for surgery, incision, excision, cutting, etc. The present invention relates to a nozzle device for carrying out.

(Prior art and its problems) Steel scalpels, electric scalpels, ultrasonic scalpels, and laser scalpels have been used effectively as conventional surgical tools depending on the purpose. However, each means has the following advantages and disadvantages. That is, although steel scalpels are widely used because they are inexpensive and easy to handle, they require careful operation and skill because they cut all tissues without distinction.
Therefore, the blood vessels are inadvertently cut, resulting in profuse bleeding. Electric scalpels are widely used because they are relatively inexpensive and easy to handle, and while they can achieve hemostasis at the same time as incision and cutting, they also cause heat damage over a wide range of areas and pose a risk of burns during operation. However, the device has problems such as noise generation in the power supply section. Ultrasonic scalpels are expensive and not widely used, but while they can remove affected tissue without damaging cords such as blood vessels, they are complicated to operate and have problems with the attached suction system. There are drawbacks that can easily occur. Although the laser scalpel is relatively expensive, it is an excellent device that allows non-contact treatment, causes less damage to the surrounding area, and has hemostasis and tissue evaporation effects. Because it is difficult to perform this procedure on selected tissues, there is a risk of major bleeding.

In order to improve the various surgical procedures described above, methods of applying pressurized fluid jets to limited areas have recently been researched and put to clinical use. Such techniques are described, for example, in the British Journal of
This can be found from previous literature such as Surgery Vol. 69 Page 93-94. According to the method of using a pressurized fluid jet, by adjusting the pressure and injection amount within an appropriate range, it is possible to separate the fluid from the surrounding tissue without cutting cords such as the vascular system. In addition, loose tissue can be removed from the treatment site along with the jet fluid. Its application range is wide: incision and cutting using high pressure such as 10Mpa, peeling using low pressure of 1Mpa or less, separation of parenchymal cells and cords in soft areas, and cleaning using low pressure of 1Mpa or less. It can be effectively used in, etc. Physiological saline, adrenaline solution, and other fluids that do not have biological reactions can be used as the fluid. Further, by appropriately adjusting the temperature of the liquid, it is possible to perform cooling or heating at the same time as the above operation, and research and experiments are progressing on the idea that it has a wide range of uses and effects. However, when the pressurized fluid is jetted and hits the affected area, the loose tissue of the affected area is mixed with water, which is violently stirred by the pressurized fluid jet and foams, making it difficult to identify the appropriate location. It is known that problems can occur, such as air pollution and the scattering of bubbles staining the surrounding area. overcome these obstacles,
The applicant has already proposed nozzle means that can be used effectively.

(Purpose of the invention) The present invention is an improvement on the device of the previous application, and is equipped with a suction means that can effectively remove foaming fluid, etc. in surgery using a pressurized fluid jet, and a valve that allows the fluid to be jetted out. , constitutes a configuration capable of controlling the stop,
By improving the valve mechanism, improved operability and improved sealing performance are achieved, and a nozzle device that can be used effectively is provided.

(Structure of the invention) In order to achieve the above-mentioned object, the surgical nozzle device according to the invention integrates a suction nozzle, an injection nozzle, and a valve mechanism, and the valve mechanism has a spring attached to the valve seat. The valve body is composed of a ball valve body which is biased by a force, a push rod which can press the ball valve body from the side, and a push button for operating the push rod.

(Embodiments of the invention) The invention will be described in more detail based on the following embodiments.

In the figure, 1 is a nozzle piece, 2 is a valve configuration,
4 is a suction nozzle provided with a suction port 3. The nozzle piece 1 is held by a nozzle holder 7 and is pressed and fixed by a valve seat 5 fitted into a valve body 8 which is screwed and fixed to the nozzle holder 7. 6 is a spherical valve, which is housed in a liquid chamber 18 bored in the valve body 8, and a spring chamber 17.
The valve seat 5 is urged by a spring 13 interposed therein. A push rod 9 is fitted so as to be movable in the radial direction of the valve body 8, and has one end facing the liquid chamber 18 so as to be able to come into contact with the spherical valve 6. 10 is a push button, and set screw 1 is attached to push rod 9.
It is locked at 6. 11 is a presser metal fitting. 1
A suction pipe 4 is connected to the suction nozzle 4 and communicates with the suction port 3. Reference numeral 15 denotes a liquid supply port, which opens at the rear end of the valve body 8 and has a piping joint such as a quick joint 29 arranged therein. Reference numeral 26 denotes a tubular handle that is secured to and extends from the rear end of the valve body 8. The suction nozzle 4 is removably fitted into the reduced diameter portion 23 of the nozzle holder 7, and is held by sealing members 27 and 28 attached to the outer periphery of the reduced diameter portion 23. A liquid supply means such as a hose 30 is appropriately connected to the liquid supply port 15 provided in the valve body 8 via a quick coupling 29, etc., and a suction pipe 14 provided in the suction nozzle 4 is connected to a drain such as a suction hose. Liquid means (not shown) are appropriately provided.

In such a configuration, the pressurized fluid introduced into the liquid supply port 15 through the hose 30 and the quick coupling 29 flows into the liquid chamber 18 via the spring chamber 17 . The fluid is now blocked by the valve arrangement 2 and does not flow forward from the fluid chamber 18. That is, the spherical valve 6 is always urged forward by the spring 13, and as a result, the spherical valve 6 is pressed against the rear end 12 of the flow path 19 formed in the valve seat 5, creating a sealing effect. , liquid chamber 18 and flow path 19
communication between them is cut off. The suction nozzle 4 always drains the liquid sucked from the front end surface 22 of the suction port 3 by means of a draining means such as a hose appropriately disposed on the suction pipe 14, regardless of whether the pressurized fluid is inflow or blocked. can be discharged. Here, when the push button 10 is pressed with a fingertip, the push rod 9 fixed to the push button 10 slides inward in the radial direction of the valve body 8 and projects into the liquid chamber 18 . Push rod 9 protruding into liquid chamber 18
The tip of is in contact with the spherical valve 6, and the spherical valve 6
is pressed in the liquid chamber 18 in a direction perpendicular to the urging direction of the spring 13. The spherical valve 6 pressed by the push rod 9 moves within the liquid chamber 18 in the direction in which the push rod 9 is pressed. For this reason, the close contact between the spherical valve 6 and the rear end 12 of the valve seat 5 is broken, the liquid chamber 18 and the flow path 19 are communicated, and the fluid is passed from the liquid chamber 18 through the flow path 19 to the nozzle piece. The liquid is injected into the injection hole 21 from the orifice 20 formed in 1, and is ejected through the ejection hole 24 of the suction nozzle 4. During operation, it is effective that the front end surface 22 of the suction nozzle 4 is supported so as to lightly touch the surface of the application site, such as the affected area. This is because the jetted fluid that is jetted from the orifice 20 and passes through the discharge hole 24 will scatter around when it collides with the affected area, etc., but the front end surface 22 of the suction nozzle 4 and the surface of the affected area etc. If so, the scattered fluid will be treated within the suction port 3 of the suction nozzle 4 and will be immediately transferred to the suction pipe 14 without being greatly scattered outside the suction nozzle 4.
The liquid can be drained from the liquid by a drainage means.
When the push button 10 is released during operation, the push rod 9 is pushed out of the liquid chamber 18 by the pressure of the pressurized fluid introduced into the liquid chamber 18. Then, the contact between the push rod 9 and the spherical valve 6 is released, so that the spherical valve 6 is pressed by the spring 13 and falls into the rear end 12 of the channel 19 formed in the valve seat 5, and is brought into close contact with the channel 19. do. Therefore, communication between the liquid chamber 18 and the flow path 19 is cut off, and the injection of fluid from the orifice 20 is stopped. The injection or stopping of the fluid during operation can be controlled as appropriate depending on the situation, and suction can be performed in parallel with the injection of fluid, or the injection can be stopped and only suction can be performed, and even If necessary, it is possible to stop the suction and perform cleaning by spraying only, and the suction nozzle 4 can be easily removed.

Although the configuration and operation of the embodiments of the present invention are as described above, the embodiments may be used with various modifications within the technical scope of the present invention. For example, it is possible to inject the fluid in a direction perpendicular to the axis of the entire device or in a direction at a predetermined angle. The removably fitted suction nozzle 4 is branched into a plurality of pieces at the tip, and each suction nozzle 4, 4, . . . has a suction port 3, respectively.
3, . . . may be bored and configured to merge with the suction pipe 14. These embodiments can be provided in the most effective form depending on the application.

(Effect of the invention) Generally, when a liquid substance such as affected tissue or blood is stirred by a pressurized fluid, it foams violently due to the air drawn in by the pressurized fluid, making it extremely difficult to confirm the location of the treatment. However, with this invention, jetting and suction can work simultaneously in parallel, so the treatment area is always clean. The suction nozzle 4 can be clearly confirmed, especially since it receives a cleaning action from the jetted fluid during suction.
If it is made of a transparent material, it is possible to proceed with the work while easily checking the treatment area from the outside. Furthermore, by integrating the fluid ejection means and the suction means, operation becomes easier, and piping and the like are integrated, making it possible to perform surgery in a simple environment. Furthermore, since the fluid is ejected and suctioned at the same time, it is possible to prevent the fluid from flowing to unnecessary areas and accumulating as much as possible, and the removable suction nozzle makes cleaning and other maintenance after use easy. It is a medically extremely effective and useful nozzle device.

[Brief description of the drawings]

Fig. 1 is a longitudinal sectional side view showing the embodiment, Fig. 2 is a longitudinal sectional side view of main parts showing another state of the valve configuration, and Fig. 3
4 and 4 are diagrams showing another embodiment. 1: Nozzle piece, 2: Valve configuration, 3: Suction port,
4: Suction nozzle, 5: Valve seat, 6: Spherical valve, 7: Nozzle holder, 8: Valve body,
9: Push bar, 10: Push button, 11: Presser metal fitting, 13:
Spring, 14: Suction pipe.

Claims (1)

[Scope of utility model registration request] It consists of a body and a suction nozzle that is detachably attached to the body, and the body includes a fluid injection nozzle piece, a spherical valve that is pressed against a valve seat by a spring, and one end that is attached to the spherical valve. A valve structure consisting of a push rod fitted in the body so that the other end can be connected to the body and the other end protrudes from the body, and an injection hole coaxial with the injection axis of the nozzle piece downstream of the nozzle piece. At the same time,
The suction nozzle includes a discharge hole provided downstream of the injection hole coaxially with the axis of the injection hole and opened at the tip of the suction nozzle, and a discharge hole provided surrounding the discharge hole and having one end opened at the tip of the suction nozzle. 1. A surgical nozzle device comprising: a suction port having an open end and a suction port communicating with a suction pipe at the other end.