CH709024A1 - Spülsauger. - Google Patents

Abstract

The invention relates to a Spülsauger (100a) having at least one suction line (1a) and at least one purge line (4a), wherein the suction line (1a) and the purge line (4a) by means of a connecting piece (3a) are interconnected, and with an operating mechanism ; (200a) comprising at least one slider (5a) for regulating the suction power and at least one control lever (10a) for regulating the flow of flushing fluid through the flushing line (4a), the flushing line (4a) being arranged in a valve housing (8a) merges, in which an exchange valve (20) can be inserted and fixed.

Description

The present invention relates to a medical instrument, a Spülsauger or rather a suction-flushing system, as used for example in the implementation of operations in which rinsed and preferably also sucked at the same time. These are in particular pituitary, tumor, but also general neurosurgical operations, as well as operations on the spine, on bones or just just to internal surgery or wounds.

For this purpose, there are so-called Spülsauger, which, connected to corresponding pumps, a first line for the rinsing solution and a second line for sucking in one instrument unite. These two lines preferably open together into a lance, with the tip of the surgical site can be rinsed and sucked simultaneously. The lines each have a first operating mechanism for regulating the purge jet and a second operating mechanism for regulating the suction power.

The operating mechanism for regulating the suction power in known Spülsaugern is usually designed by means of a slider which is slidably mounted on the suction line and releases more or just less of the opening cross-section of a Falcksluftdüse.

The control mechanism of the purge line, however, is relatively complicated and designed in known Spülsaugern usually by means of a regulatable valve. This valve has at least one mounted lever, guides, pistons, connections and usually also at least one spring and is therefore extremely difficult to clean and sterilize. Even a slider that is not completely removable, represents a major hurdle for the certification of the medical instrument according to sterilization criteria.

It is not only the many components and the corresponding many edges and scratches a problem for the sterilization, but also the use of two different materials (eg metal and plastic or rubber for the seals), because of different material behavior, condensation, Bonding and aging. It is also disadvantageous in the prior art vacuum cleaners that they can not easily be dismantled into their individual components as simply as possible. They are assembled and bolted together and could probably only be made functional by an engineer after an improper disassembly.

Another disadvantage of known Spülsauger is the operation that can be performed only with difficulty by one hand.

Another disadvantage is spearheads in which the purge and the suction are indeed united, but so close and possibly concentric, so they tend to clog.

The object of the present invention is to provide a Spülsauger or a suction-flushing system while avoiding the above-mentioned disadvantages, which is optimally sterilized and is generally optimized in its properties and its application.

The solution of the problem is initially in the inventive associated arrangement of a suction line and a purge line, wherein at least the purge line forms a valve housing and in this valve housing an exchange valve can be used.

Furthermore, in a preferred embodiment variant of an inventive Spülsaugers or rather suction-flushing system, not only the valve designed as an exchange valve, but also a slide as an exchange slide. This is preferably interchangeable before an operation or use of the Spülsaugers and further preferably designed as a disposable product by the material from which it is made, the pressure and the temperature in an autoclave does not survive harmless. This material is, for example, a suitably selected plastic, which can be inexpensively injection-molded and furthermore preferably is biocompatible.

The same applies preferably also for the material from which the replacement valve and / or a control lever of this replacement valve are made.

In a further preferred embodiment variant of an inventive Spülsaugers a plug-in sleeve is arranged at the proximal end of the lance and also as a replacement part. Further preferably, this plug-in cuff is also made of a material which is easily deformed under pressure and temperature.

The lance itself can be made of a highly sterilizable metal or a good sterilizable metal alloy and preferably combines a first continuation tube for the purge line and a second continuation tube for the suction line in a common lance tube. The two continuation tubes are furthermore preferably arranged so that the distal lance tip forms tube openings arranged one above the other in their cross section. For optimized handling of the inventive Spülsaugers these tube openings are namely not concentric, but preferably just above one another and still preferably preferably so that the tube opening of the flushing line is above the tube opening of the suction line. As a result, it is easier to "aim" with the flushing jet and, moreover, the tube opening of the suction line alone by its larger opening cross-section compared to a concentric arrangement better suited to suck in any bone fragments or solid parts and not clog.

It would be possible to form the lance or the plug-in sleeve with a collar which is screwed for example by means of a union nut on the valve housing. However, it is advantageous in favor of a continuous interchangeability, even during the operation to have lances in different lengths, thicknesses and shapes available and to be able to attach them by means of a plug connection to the valve body or rather on the lines.

Furthermore, it would be possible to design not only the replacement valve and the slide as a disposable product, but also the complete lance and optionally also the supply hoses. Preferably, all of these four components of a purging aspirator according to the invention can be supplied in a sterile set, for each operation.

The valve housing of an inventive Spülsaugers preferably forms at least two distally open guide slots, can be used in the protruding ends of a shaft of the replacement valve. Furthermore, a guide rail is preferably arranged in the upper region of the outer diameter, in which a guide extension of the slider is slidably inserted.

The slider of an inventive slider is guided in this way not only displaceable by being attached to a straight, cylindrical part of the suction line, but also with the guide extension, which is guided in this guide rail slidably. As a result, the slide is secured against rotation.

The guide extension of the slider is at the same time stop for the maximum forward or distal sliding movement by a union nut not only summarizes the replacement valve used in the valve housing, but also closes the open end of the guide rail.

The sliding movement of the slider is to the rear or proximal preferably preferably by a thickening in the Saugleitungs tube diameter. However, the guide rail in the valve housing can also be correspondingly long, so that the guide extension sliding in it comes to rest at the proximal end of the guide rail.

Depending on the sliding position of the slider, an edge of the slide can release a false air nozzle in the suction corresponding more or less correspondingly. But it can also be provided so that both the suction line an opening, and the slider having an opening and thus the regulation of the suction power results from how congruent the two openings come to lie one above the other.

Optionally, a cover of the false air nozzle or the two openings may be provided, for example in the form of a grid or in the form of covers that specify a C- or S-shaped path for the air flow.

The simplest embodiment of the replacement valve of an inventive Spülsaugers is an actuatable by the lever eccentric pressure roller which presses on a flexible hose for the purge line in a greater or lesser extent, depending on the position of the lever.

A preferred embodiment variant of an exchange valve, however, provides in continuation of the lever before a hinged shaft with a hole. Depending on the position of this bore in relation to inner channels in a valve body, then flows more or less flushing fluid through. A shaft of this shaft is preferably designed conical and the bore in the valve body into which the shaft is inserted, also in accordance with a form-fitting conical. In this way, a single mounting possibility of the valve shaft is predetermined and it is sufficient attachment only on one side, for example by means of a screw.

The operation of the flushing can be designed so that the lever must be kept pressed or pivoted, so that flushing fluid also flows. This can result solely by the pressure of the rinsing liquid, and / or by a spring. However, it is optionally provided for an optimized handling of a flushing aspirator according to the invention, either by a deliberately set stiffness of the lever and / or by latching positions of the lever, that the lever no longer has to be held for the continuous flow of rinsing solution, but in its set position remains. This has advantages, for example, to have the thumb as a control finger only for the regulation of the slider for the suction power available or also to put the Spülsauger during its operation in an (open) surgical site and to have the hand completely free.

In a further, optional embodiment variant of an inventive Spülsaugers the two operating functions, ie speak the pivoting lever and the slide coupled together, resulting in a simultaneous regulation of the flushing solution flow and the suction power results. More flushing automatically results in more suction power and vice versa. This simultaneous regulation according to the invention can take place in a linear-linear relationship, depending on the arrangement, size and shape of the flow bore in the valve shaft and the false-air nozzle. The ratio of the operating functions to one another can however also be chosen to be linear-progressive or progressive-linear or progressive-progressive.

In a further, optional embodiment variant of a flushing sucker according to the invention, the flushing jet is pulsed. It has been observed that a pulsed jet, while not having a higher overall debit, not only rinses better but above all cools better.

Furthermore, optionally for the previously described embodiment variant of an inventive Spülsaugers with a pulsed purge jet and a pulsed Luftsog be provided, preferably clocked according to the pulsation of the purge jet.

For a manually generated pulsation of the purge jet may further optionally be arranged in the hose, which opens into the purge line, a Schlaucholive.

The fixed connections between the individual parts of an inventive Spülsaugers are preferably welded or soldered, ground and further preferably surface-treated. As already mentioned, other types of connection include screwing, riveting and / or gluing.

An inventive Spülsauger is preferably surface-treated, preferably also antibacterial nanocoated, for example with nanosilver, or plasma-coated according to a newly developed by the Fraunhofer Institute for Manufacturing Technology and Applied Materials IFAM in Bremen / Germany and the Plasmatreat GmbH in Steinhagen / Germany ,

Also suitable are so-called lotus flower surfaces, but also a nano-coating by the method of nanopool GmbH in Hülzweiler-Schwalbach / Germany.

Other eligible surface treatments include coatings that result in a dark matte color of the entire irrigator so that it is anechoic under the illumination of surgical lights or a microscope. This is preferably achieved by the surfaces of a novel Spülsaugers are at least partially sandblasted or coated with a black ceramic. In addition, color coding into consideration, but also surface treatments that counteract premature wear of the Spülsaugers or the controls. The latter is in particular the so-called diamondization into consideration.

The grips of a novel Spülsaugers may have a corrugation for the purpose of improved contact in the hand of the surgeon, for example, a so-called pyramid ribbing. However, further preferred is a so-called golf ball design, which is characterized by a diameter of about 1-10 mm, preferably in a length about 4 and in a width about 3 mm amount, oval curved depressions in the surface. This golf ball design gives best results in terms of cleanability and sterilizability, but also in terms of handling and feel.

An inventive Spülsauger is preferably at least partially made of titanium or one or more titanium alloys, but there are also stainless steel alloys or a composite of the materials mentioned into consideration.

The disclosed different embodiments of a novel Spülsaugers are arbitrarily combinable with each other in terms of non-basic function-relevant features. Thus, for example, all described design variants can be combined with the described, even within a single Spülsaugers, as well as the design variants with or without control lever backup, with or without coupling function, with or without pulsation, with or without surface treatment, coloring, matting or diamond coating, and with respect to the disclosed materials or composites thereof.

[0036] The present application discloses a method for operating a purge aspirator as disclosed, with the following basic method steps: <tb> a) <SEP> - placing a suction line hose on a Luer-Lock connection of a suction pipe; <b> <b> <SEP> - fitting a purge line hose onto a luer lock port of a purge line pipe; <tb> c) <SEP> - attaching a slider to the suction pipe and inserting a guide extension into a guide rail on a valve housing; <tb> d) <SEP> - inserting a replacement valve into the valve body; <tb> e) <SEP> - fitting and turning a union nut onto the valve body; <tb> f) <SEP> - inserting a plug-in sleeve of a lance onto the suction pipe and into a rinse pipe opening in a valve body; <tb> g) <SEP> - operating a lever of the replacement valve to regulate the flow rate of the washing liquid; <tb> h) <SEP> - Actuate the slider to regulate the suction power.

An inventive suction cleaner brings the following advantages:

Further or advantageous embodiments of an inventive Spülsaugers form the subject of the dependent claims.

The list of reference numerals is part of the disclosure.

Based on figures, the invention is explained symbolically and by way of example closer. The figures are described coherently and comprehensively. They represent schematic and exemplary representations and are not true to scale, even in the relation of the individual components to each other. The same reference symbols denote the same component, reference symbols with different indices indicate functionally identical or similar components.

In the process, they show <Tb> FIG. 1 <SEP> is a schematic and perspective view of an exemplary embodiment variant of a Spülsaugers according to the prior art; <Tb> FIG. 2 <SEP> is a schematic and perspective partial view of the operating mechanism of the exemplary embodiment variant of the state of the art flushing sucker of FIG. 1; <Tb> FIG. FIG. 3 shows a schematic and perspective illustration of an exemplary embodiment variant of a flushing sucker according to the invention, FIG. 3a showing the lance tip in a detailed view; <Tb> FIG. 4 <SEP> a schematic and perspective view of the operating mechanism and the conduits of the inventive purge from Fig. 3; <Tb> FIG. 5 <SEP> is a schematic sectional view of the operating mechanism and the conduits of the inventive purge aspirator from FIGS. 3 and 4; <Tb> FIG. 6 is a schematic plan view of the operating mechanism and the suction pipe of the inventive Spülsaugers of Figures 3, 4 and 5 ..; <Tb> FIG. 7 is a schematic and perspective view of an exchange valve of a flushing sucker according to the invention; <Tb> FIG. 8 <SEP> is a schematic sectional view and a side view of the replacement valve of FIG. 7; <Tb> FIG. 9 is a schematic and perspective view of a valve body of the replacement valve of FIGS. 7 and 8; <Tb> FIG. 10 <SEP> is a schematic and perspective view of an operating lever of the replacement valve of FIGS. 7 and 8 and <Tb> FIG. 11 <SEP> a schematic and perspective view of a slide according to the invention.

In Fig. 1 an exemplary embodiment variant of a Spülsaugers 100 is shown schematically, as it is known from the prior art. It comprises a suction line tube 1, which ends proximally in a Luer lock connection 2. By means of a connecting sleeve 3, the suction pipe 1 is firmly connected to a flushing pipe 4.

On the suction line pipe 1, a concentric slide 5 is slidably disposed and covers, depending on the sliding position, a non-visible false air nozzle 6. The distal end of the suction pipe 1 is inserted into an extension 7 of a valve housing 8. By means of a screw 9, an operating lever 10 is articulated to the valve housing 8 and acts by means of a plunger 11 on a valve housing 8 arranged in the fixed valve 12 for regulating the rinsing liquid, which exits from invisible distal outlet openings of the valve housing 8.

The regulation of the flow rate of the rinsing liquid thus takes place via a pivoting movement 13 of the operating lever 10 and the regulation of the suction power via a sliding movement 14 of the slider 5. The operating lever 10, the valve 12 and the slider 5 together form an operating mechanism 200th

1 further shows a lance 15 which can be inserted with a proximal end 16a of a suction cannula 17a and a proximal end 16b of a flushing cannula 17b into the suction line 1 and into the flushing line 4, respectively. The rinsing cannula 17a and the rinsing cannula 17b are united in a common lance tube 18 and terminate in a lance tip 19.

2, the Spülsauger 100 of FIG. 1 is shown in a perspective partial view, which represents the control mechanism 200 in more detail. Now it can be seen that the slide 5 releases the false air nozzle 6 in this retracted position. Furthermore, it can be seen that the valve 12 is not only fixedly mounted in the valve housing 8, but also includes many individual parts, such as sleeves, pins, a spring and seals.

In Fig. 3, an inventive Spülsauger 100a is shown schematically and in perspective, which also comprises a suction pipe la and a Spülleitungs tube 4a, which in turn are connected to each other with a connecting piece 3a. Both the proximal end of the suction line tube 1a and the proximal end of the purge line tube 4a each have one. Luer lock connection 2a and 2b.

On the suction line tube la a slider 5a is slidably disposed. The Spülleitungs tube 4a passes into a valve housing 8a, in which an exchange valve 20 has been inserted with a laterally disposed operating lever 10a and is taken by a union nut 21.

The operating lever 10a, which is incidentally in the maximum open position for maximum flushing solution flow, describes a pivoting movement 13a and the slider 5a a sliding movement 14a. The replacement valve 20, with the operating lever 10a and the slider 5a form an operating mechanism 200a of the inventive purge sucker 100a.

At the proximal end of a lance 15a with a common lance tube 13a, a plug-in sleeve 22 is provided. The slide 5a, the replacement valve 20, the operating lever 10a, as well as the plug-in sleeve 22 are preferably injection-molded parts made of a biocompatible plastic, which can not be sterilized.

3a shows a detailed view of a lance tip 19a from the front, wherein it can be seen that preferably a larger opening cross section of the suction cannula 17c is arranged below and a smaller opening cross-section Spülkanüle 17d above.

In Fig. 4, from the inventive purge 100a of FIG. 3, the suction line tube la, the Spülleitungs tube 4a and the operating mechanism 200a shown with the operating lever 10a and with removed plug-in cuff. The operating lever 10a is connected to a screw 23 with a valve body 24 and is inserted in this connected state together with the valve body 24 in the valve housing 8a, because a concealed by the nut 21 slot is open to the front.

Characterized in that the plug-in sleeve is removed, in Fig. 4, a flushing line insertion opening 25 and a suction line insertion opening 26 are clearly visible.

5 shows that shown in FIG. 4 in a sectional view. On the one hand, it is clearly visible how the valve body 24 is arranged in the valve housing 8a and which flow path describes a rinsing solution 30 through the rinsing pipe 4a and the valve body 24.

On the other hand, it can be clearly seen that the slider 5a forms a guide extension 27, which is inserted in a guide rail 28 of the valve housing 8a. Thus, the guide extension 27 serves not only as an additional stabilization or guidance, but also as a rotation-securing the slider 5a, which could otherwise turn on the cross-sectionally round suction pipe la to discretion. However, the guide extension 27 also limits the displacement movement 14a by being in front of a stop 29a, which is formed by the edge of the closed union nut 21. The guide groove 28 may form a stopper 29b at the rear end to limit the sliding movement 14a, but the same can be achieved also with a stopper 29c formed by an outer diameter thickening of the suction pipe 1a.

The guide rail 28 is open to the front, so that when removed union nut 21 of the slide 5a can be replaced.

In FIG. 6, the one shown in FIG. 5 is shown again in plan view. It can be seen that the operating lever 10a is arranged on a valve shaft 31 which penetrates the valve housing 8a and the valve body.

Fig. 7 shows a schematic and perspective view of the exchange valve 20, with the already known components. As shown, the replacement valve 20 is preferably intended as a disposable product for one operation only.

8, the operation of the exchange valve 20 is shown by means of a sectional view B-B. Inner channels 32a-32c are arranged in the valve body 24, and when the valve shaft 31 with a bore 33 arranged therein is in free passage as shown, the flushing liquid 30 flows.

Fig. 9 shows schematically and in perspective only the valve body 24 and its inner channels arranged inside 32a-32c. Furthermore, it can be seen that a conical bore 34 is provided for the use of the valve shaft.

In Fig. 10, the operating lever 10a is shown separately, screwed with the screw 23 on the valve shaft 31. The bore 33, which causes the opening or the closing of the replacement valve by its pivotal position in the valve body, is in a conical shaft 35 arranged.

Fig. 11 shows the slider 5a separately, which is preferably also provided as a disposable product. It can be seen on its upper side a recessed grip or rather a grip saddle 36 and a guide bore 37, with which the slide 5a can be pushed onto the suction line pipe. Also clearly visible is the guide extension 27.

LIST OF REFERENCE NUMBERS

[0063] <tb> 1, 1a <SEP> - Suction line pipe <tb> 2, 2a, 2b <SEP> - Luer lock connector <tb> 3, 3a <SEP> - Coupling sleeve, connector <tb> 4, 4a <SEP> - Purge pipe <tb> 5, 5a <SEP> - Slider <tb> 6 <SEP> - False air nozzle, intake opening <tb> 7 <SEP> extension <tb> 8, 8a <SEP> - Valve body <tb> 9 <SEP> - screw <tb> 10, 10a <SEP> - Operation lever <tb> 11 <SEP> - Pestle <tb> 12 <SEP> - valve fix <tb> 13, 13a <SEP> - Swinging movement <tb> 14, 14a <SEP> - Sliding movement <tb> 15, 15a <SEP> - Lance <tb> 16a, 16b <SEP> - proximal end <tb> 17a, 17c <SEP> - Suction cannula <tb> 17b, 17d <SEP> - irrigation cannula <tb> 18, 18a <SEP> - common lance tube <tb> 19, 19a <SEP> - Lance tip <tb> 20 <SEP> - replacement valve <tb> 21 <SEP> - union nut <tb> 22 <SEP> - Plug-in cuff <tb> 23 <SEP> - screw <tb> 24 <SEP> - valve body <tb> 25 <SEP> - Pipe insertion port <tb> 26 <SEP> - Suction line insertion hole <tb> 27 <SEP> - Guide extension <tb> 28 <SEP> - guide rail, guide groove <tb> 29a-29c <SEP> - Stop <tb> 30 <SEP> - Rinsing fluid, flow path <tb> 31 <SEP> - Valve shaft <tb> 32a-32c <SEP> - indoor channels <tb> 33 <SEP> - Bore <tb> 34 <SEP> - conical bore <tb> 35 <SEP> - conical shaft <tb> 36 <SEP> - recessed grip, handle saddle <tb> 37 <SEP> - Guide hole <tb> 100, 100a <SEP> - Suction <tb> 200, 200a <SEP> - Operating mechanics

Claims (15)

1. Spülsauger (100, 100a) with at least one suction line (1, la) and at least one purge line (4, 4a), wherein the suction line (1, la) and the purge line (4, 4a) by means of a connecting piece (3, 3a), and with an operating mechanism (200, 200a), the at least one slide (5, 5a) for regulating the suction power and at least one operating lever (10, 10a) for regulating the flow of rinsing liquid (30) the flushing line (4, 4a), characterized in that the flushing line (4, 4a) merges into a valve housing (8, 8a) into which an exchange valve (20) can be inserted and fixed. 2. Spülsauger (100a) according to claim 1, characterized in that the slide (5) is an exchange slide (5a), which on the suction line (1 a) insertable and fixable. 3. Spülsauger (100a) according to claim 2, characterized in that the valve housing (8a) at least one distal open guide slot for receiving a valve shaft (31) of the replacement valve (20) and at least one guide groove (28) for receiving a guide extension ( 27) of the replacement slide (5a) ausformt and the guide slot and the guide groove (28) by a closing device (21) are closable. 4. purge sucker (100a) according to any one of the preceding claims 2 or 3, characterized in that the exchange valve (20) and the exchange slide (5a) are designed as disposable products by at least a portion of the materials of which they do not exist can be sterilized in an autoclave. 5. purge sucker (100a) according to any one of the preceding claims, characterized in that the exchange valve (20) comprises an operating lever (10a) which is designed as a disposable product by at least a portion of the material or materials of which it consists , are not sterilizable in an autoclave. 6. Spülsauger (100a) according to any one of the preceding claims, characterized in that the suction line (1 a) and the purge line (4 a) each form a suction line insertion opening (26) and a Spülleitungsstecksteck (25) into which a plug Cuff (22) for a replaceable lance (15a) can be inserted and that the plug-in sleeve (22) is designed as a disposable product by at least a portion of the material of which it is not sterilized in an autoclave. 7. purge sucker (100a) according to claim 6, characterized in that the replaceable lance (15a) is designed as a disposable product by at least a portion of the material of which it is not sterilized in an autoclave. 8. purge (100a) according to any one of the preceding claims 4-7, characterized in that the non-sterilizable in an autoclave material is a biocompatible plastic, which deforms under the pressure and temperature of an autoclave. 9. Suction cleaner (100a) according to any one of the preceding claims 7 or 8, characterized in that the replaceable lance (15a) combines a suction cannula (17c) and a flushing cannula (17d) in a common lance tube (18a) and that the openings of the suction cannula (17c) and the flushing cannula (17d) are arranged one above the other in a lance tip (19a). 10. Suction cleaner (100a) according to any one of the preceding claims, characterized in that the exchange valve (20) comprises a valve shaft (31) having a bore (33) in a bore (34) of a valve body (24) with inner channels (32a -32c) can be inserted and fixed. 11. purge sucker (100a) according to any one of the preceding claims, characterized in that the operating lever (10a) remains due to Einrastpositionen or stiffness in its set position. 12. Spülsauger (100a) according to any one of the preceding claims, characterized in that a pivoting movement (13a) of the operating lever (10a) and a sliding movement (14a) of the exchange slide (5a) are mechanically coupled to each other and thus the flow of rinsing fluid (30) and regulate the suction power simultaneously. 13. Suction cleaner (100a) according to any one of the preceding claims, characterized in that the flow of the rinsing liquid (30) is pulsed. 14. purge aspirator (100a) according to claim 13, characterized in that the air suction of the suction line (1a) to the pulsation of the rinsing liquid (30) is pulsed clocked. 15. A method for operating the Spülsaugers (100a) according to any one of the preceding claims 1-14, characterized in that the following method steps are carried out: a) - placing a suction line hose on a Luer-lock connection (2a) of the suction pipe (1a); b) - placing a purge line hose on a Luer-lock connection (2b) of the purge line pipe (4a); c) - attaching the replacement slide (5a) to the suction pipe (1a) and inserting the guide extension (27) in the guide groove (28) on the valve housing (8a); d) - inserting the replacement valve (20) in the valve housing (8a); e) - closing the closing device (21) of the valve housing (8a); f) - inserting the plug-in sleeve (22) of the lance (15a) in the suction line insertion opening (26) and in the Spülleitungsstecksteck (25) in the valve body (24); g) - operating the operating lever (10a) of the replacement valve (20) to regulate the flow rate of the rinsing liquid (30); h) - operating the exchange slider (5a) to regulate the suction power.