EP4178466A1 - Medizinisches instrument - Google Patents
Medizinisches instrumentInfo
- Publication number
- EP4178466A1 EP4178466A1 EP22758430.7A EP22758430A EP4178466A1 EP 4178466 A1 EP4178466 A1 EP 4178466A1 EP 22758430 A EP22758430 A EP 22758430A EP 4178466 A1 EP4178466 A1 EP 4178466A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- shaft
- push
- functional element
- medical instrument
- instrument
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/12—Surgical instruments, devices or methods for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels or umbilical cord
- A61B17/128—Surgical instruments, devices or methods for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels or umbilical cord for applying or removing clamps or clips
- A61B17/1285—Surgical instruments, devices or methods for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels or umbilical cord for applying or removing clamps or clips for minimally invasive surgery
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/28—Surgical forceps
- A61B17/29—Forceps for use in minimally invasive surgery
- A61B17/2909—Handles
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B2017/0046—Surgical instruments, devices or methods with a releasable handle; with handle and operating part separable
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B2017/00477—Coupling
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B2017/00831—Material properties
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/28—Surgical forceps
- A61B17/29—Forceps for use in minimally invasive surgery
- A61B2017/2901—Details of shaft
- A61B2017/2902—Details of shaft characterized by features of the actuating rod
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/28—Surgical forceps
- A61B17/29—Forceps for use in minimally invasive surgery
- A61B17/2909—Handles
- A61B2017/2925—Pistol grips
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/28—Surgical forceps
- A61B17/29—Forceps for use in minimally invasive surgery
- A61B2017/2926—Details of heads or jaws
- A61B2017/2932—Transmission of forces to jaw members
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/28—Surgical forceps
- A61B17/29—Forceps for use in minimally invasive surgery
- A61B2017/2926—Details of heads or jaws
- A61B2017/2932—Transmission of forces to jaw members
- A61B2017/2939—Details of linkages or pivot points
- A61B2017/294—Connection of actuating rod to jaw, e.g. releasable
Definitions
- the invention relates to a medical instrument, in particular for applying medical clips, having a handle device with a fixed handle and a handle that can be moved relative to the same, a shaft that extends longitudinally between a proximal shaft end and a distal shaft end, the proximal shaft end being detachably connected to the handle device , and wherein the distal end of the shaft has an instrument mouth, which can be opened and/or closed by actuating the movable handle, and having an elongate push-pull element, which can be moved axially in an elongate cavity of the shaft and is guided for force and Movement transmission is operatively connected proximally to the movable handle and distally to the instrument mouth.
- Such a medical instrument is known from EP 0 688 187 B1 in the form of medical forceps and is intended for use in endoscopic interventions.
- the well-known medical forceps has a handpiece with a fixed handle and a movable handle.
- the medical forceps has an elongated shaft in the form of an outer tube that is detachably connected to the handpiece.
- a tie rod is guided in an axially movable manner in the outer tube.
- the pull rod is operatively connected at one end to a forceps jaw mounted distally on the outer tube and at the other end to the movable handle.
- the outer tube can be removed from the handpiece together with the jaws of the pliers and the pull rod. This in particular for cleaning and sterilization.
- the object of the invention is to provide a medical instrument of the type mentioned at the outset that allows particularly simple and thorough cleaning.
- the proximal end of the shaft has an opening that opens into the cavity, which is designed to introduce a fluid flow in the direction of the distal end of the shaft, and that a functional element is arranged in the cavity, which has a plurality of fluid guide vanes arranged offset in the circumferential direction of the shaft which are set up to generate a twist in the fluid flow directed in the circumferential direction of the shaft.
- the cavity of the shaft can be flushed through particularly effectively. This enables particularly easy and thorough cleaning.
- the opening provided according to the invention is set up for introducing a fluid intended for cleaning purposes into the cavity.
- a fluid can for example, a medical cleaning liquid, a disinfectant solution or the like can be used.
- the functional element present according to the invention influences the flow properties of the fluid flow introduced into the cavity through the opening.
- the functional element has the plurality of fluid guide vanes arranged offset in the circumferential direction of the shaft.
- the fluid guide vanes deflect the fluid flow, which is directed distally from the opening, in the circumferential direction, so that a rotational flow component (swirl) is generated.
- the fluid guide vanes generate turbulence.
- the functional element can also be referred to as a swirl generator.
- the inventors have recognized that even more thorough cleaning of the cavity can be achieved by the swirl and/or turbulence of the fluid flow.
- the medical instrument according to the invention can be transferred between a ready-to-use assembled state and a disassembled state, in particular for cleaning purposes.
- the proximal end of the shaft is releasably connected to the handle device.
- the shank and the handle device are locally separated from one another, the proximal end of the shank being detached from the handle device for this purpose.
- the detachable connection between the proximal end of the shaft and the handle device is, for example, a clamp, plug, latch and/or screw connection.
- the opening is accessible at least in the disassembled state for initiating the fluid flow. Alternatively or additionally, the opening can be accessible in the assembled state.
- the shaft has a further opening arranged distally, which functions as an outlet for the fluid flow introduced into the cavity.
- the further opening can be arranged at the proximal end of the shaft.
- the opening of the proximal shaft end can be set up as an inlet for introducing and as an outlet for discharging the fluid flow.
- the shank extends longitudinally, preferably straight, between its proximal shank end and its distal shank end.
- the shaft is preferably tubular and/or hollow-cylindrical, at least in sections.
- the shaft can be in one piece or in several parts.
- the cavity is preferably oriented coaxially to the shaft and/or extends longitudinally between the proximal end of the shaft and the distal end of the shaft.
- the push-pull element serves to transmit force and movement from the movable handle to the instrument mouth.
- the instrument mouth can be opened and/or closed by actuating the movable handle.
- the instrument mouth is preferably formed between two relatively movable jaw parts which are moved towards one another in the closed position and away from one another in the open position.
- the moveable handle is moveable relative to the fixed handle between a non-actuated, rest position and an actuated, operative position.
- the instrument mouth is between a closed Movable closed position and an open open position.
- the push-pull element can exert a pull and/or push effect on the instrument mouth, with the latter being preferred.
- the tension-compression element acts as a tension element.
- the tension/compression element acts as a pressure element and/or push element.
- the push-pull element is elongated between its proximal end and its distal end, preferably straight and/or coaxial to the cavity.
- the push-pull element is guided in a form-fitting manner in the radial direction and slidably in the axial direction in the shaft, more precisely in its cavity.
- the medical instrument is preferably intended for laparoscopic interventions.
- the medical instrument can be, for example, medical forceps, scissors, clamps or the like.
- the instrument mouth can be, for example, a forceps mouth, scissors mouth, clamp mouth or the like.
- the push-pull element is operatively connected to the instrument mouth by means of the functional element, the functional element being axially movable together with the push-pull element and having a proximally arranged first support section on which a distal end of the push-pull -Elements is supported axially, and wherein the functional element has a distally arranged second support portion which acts at least indirectly on the instrument mouth. Consequently, in this embodiment of the invention, the functional element has a particularly advantageous multiple function. On the one hand, the functional element acts as a swirl, vortex and/or turbulence generator.
- the functional element acts at the same time as a mechanical transmission element for force and movement transmission from the push-pull element to the instrument mouth and/or vice versa.
- a number of required components can be reduced and a particularly simple construction of the medical instrument can be achieved.
- the functional element has the proximally arranged first support section for the operative connection with the push-pull element that transmits force and movement. This interacts with the distal front end of the train-compression element in compression and/or tension.
- the distal front end of the push/pull element is preferably axially supported directly on the first support section.
- the functional element has the distally arranged second support section. This is at least indirectly operatively connected to the instrument mouth.
- a spring element set up for the spring-loaded return of the push-pull element is arranged in the cavity, the spring element being operatively connected to the push-pull element by means of the functional element and for this purpose being axially supported on a third supporting section of the functional element arranged distally . Consequently, in this embodiment of the invention, the functional element also acts as a mechanical transmission element for transmitting the preload of the spring element to the push-pull element. As a result, the number of components required can be further reduced and an even more simplified structure can be achieved.
- the spring element counteracts an axial movement of the push-pull element for opening or closing the instrument mouth.
- the spring element Since the push-pull element is operatively connected on the one hand to the instrument mouth and on the other hand to the movable handle, the spring element also indirectly brings about a spring-loaded return of the instrument mouth, preferably from the closed to an open position, and of the movable handle in the direction of a non-actuated rest position .
- the spring element is arranged on a distal side of the functional element. Starting from the opening arranged at the proximal end of the shaft, the fluid flow flows in the distal direction through the hollow space. Since the spring element is arranged on the distal side of the functional element, the fluid flow hits the spring element with a swirl that has already been generated. As a result, the spring element can be cleaned particularly thoroughly.
- the spring element is a helical spring wound in the circumferential direction of the shaft, the fluid guide vanes being designed and/or arranged such that a direction of the swirl generated and a winding direction of the helical spring are oriented in the same direction.
- a further improved cleaning of the spring element can thereby be achieved. Because the inventors have recognized that by orienting the direction of the twist and the winding direction of the helical spring in the same direction, improved flow properties can be achieved again—with regard to the cleaning result that can be achieved.
- Oriented in the same direction means that the twist generated by the functional element and the windings of the helical spring are directed clockwise or counterclockwise around the longitudinal axis in relation to a common axial viewing direction along the shaft.
- the fluid guide vanes each have a radially outwardly oriented fitting surface, the functional element being held in the cavity by means of a fit between the fitting surfaces and a radially inwardly oriented inner wall surface of the shaft.
- the functional element is held at least in the radial direction.
- the functional element can be positioned axially in the cavity by means of the fit be held. In any case, this is the case when no axial mobility of the functional element is provided.
- the fit can be an interference fit, a transition fit, or a clearance fit.
- separate bearing and/or fastening elements for bearing and/or fastening the functional element in the shaft can be dispensed with.
- the fitting surfaces of the fluid guide vanes slide along the inner wall surface of the shaft.
- the mating surfaces and the inner wall surface interact in a form-fitting manner.
- the inner wall surface of the shank is preferably circular-cylindrical.
- the mating surfaces are each designed as convex cylinder jacket segments.
- the functional element is made in one piece from a plastic material or a Meta II material.
- the functional element is manufactured in several parts.
- the functional element can be made partly from a plastic material and partly from a Meta II material.
- the push-pull element can be pushed axially through the opening into the shank for assembly and can be pulled out axially through the opening from the shank for disassembly.
- the opening consequently has a particularly advantageous multiple function.
- the opening serves as an inlet for introducing the fluid flow.
- the opening also serves as a passage for the push-pull element for assembly with and disassembly from the shaft. The push-pull element can be pulled out of the cavity axially through the opening at least when the proximal shaft end is released from the grip device and the medical instrument is in its dismantled state.
- the opening is provided with a fluid connector.
- the fluid connector can be, for example, a Luer connector, an NRFit connector or the like.
- the fluid connector is set up for a fluid-tight connection with a complementary fluid connector.
- a fluid line provided with such a complementary fluid connector can be connected to the opening.
- the fluid flow can be introduced through the opening when it is subjected to an overpressure. This allows a further improved cleaning.
- the invention also relates to a shank for a medical instrument, having a distal shank end for receiving an openable and closable instrument mouth is set up, a proximal end of the shaft, which is set up for detachable connection with a handle device of the medical instrument, and having an elongate hollow space, which is set up for axially movable accommodation of an elongate push-pull element for force and movement transmission between the handle device and the instrument mouth is.
- the proximal end of the shaft has an opening that opens into the cavity, which is designed to introduce a fluid flow in the direction of the distal end of the shaft, and a functional element is arranged in the cavity, which has a plurality of fluid guide vanes arranged offset in the circumferential direction of the shaft, which Generating a directed in the circumferential direction of the shaft twist in the fluid flow are set up.
- the shaft according to the invention can be cleaned particularly easily and thoroughly. To avoid repetition, reference is made to what has been said about the medical instrument according to the invention for more detailed explanation and reference is expressly made. Configurations of the shaft according to the invention correspond to configurations of the medical instrument according to the invention.
- the shank according to the invention is particularly advantageously suitable for medical forceps.
- the shaft according to the invention is also suitable for other medical instruments with a grip device arranged proximally and an instrument mouth arranged distally. Medical spreaders, scissors, clamps or the like can be mentioned in particular as examples.
- FIG. 1 shows a schematic side view of an embodiment of a medical instrument according to the invention with a handle device and a shaft designed according to the invention, which is detachably mounted on the handle device,
- FIG. 2 in a schematic, perspective longitudinal section of the shaft according to Fig. 1,
- FIG. 3 shows a schematic, perspective longitudinal section of a push-pull element of the medical instrument according to FIG. 4 shows the medical instrument according to FIG. 1 in the area of the handle device in a schematic, partially cut-off longitudinal section;
- FIG. 5 is a schematic, partially cut-away side view of a detail of the shaft in the area of a distally arranged instrument mouth and with individual components and/or sections omitted,
- Fig. 6 in a truncated, perspective detailed view a partial area of the view according to Fig. 5 in the area of a functional element
- FIG. 8 shows a schematically greatly simplified longitudinal sectional view of the functional element according to FIG. 7 and
- FIG. 9 shows a proximal end of the shaft of the shaft according to FIG. 2 in a partially cut-off longitudinal section.
- a medical instrument is provided for use in laparoscopic procedures.
- the medical instrument is medical forceps 1, is used to apply medical clips and can therefore also be referred to as a medical clip applicator.
- the medical forceps 1 has a handle device 2, an elongate shaft 3 (see FIG. 2) and a push-pull element 4 (see FIG. 3).
- the handle device 2 has a fixed handle 5 and a movable handle e.
- the movable handle 6 can be moved manually relative to the fixed handle 5 between a non-actuated rest position (FIGS. 1, 4) and an actuated working position not shown in detail in the drawing.
- the movable handle 6 can be pivoted about a pivot axis 7 relative to the stationary handle 5 .
- the movable handle e In the non-actuated rest position, the movable handle e is pivoted clockwise about the pivot axis 7 away from the stationary handle 5 .
- the movable handle 6 In the actuated working position, the movable handle 6 is pivoted counterclockwise about the pivot axis 7 on the stationary handle 5 .
- the movable handle can be moved in a translatory manner between its rest and working positions.
- the shank 3 extends longitudinally between a proximal shank end 8 and a distal shank end 9 .
- the proximal shaft end 8 is detachably connected to the handle device 2 .
- the shaft 3 can be detached from the handle device 2 and the medical forceps 1 can be transferred from the ready-to-use assembled state shown in FIG. 1 to a dismantled disassembled state.
- the dismantling state is primarily used for cleaning and/or disinfecting the shaft 3 and/or the handle device 2.
- the distal end of the shaft 9 has an instrument mouth in the form of a forceps mouth 10, which can be moved between a closed closed position by actuating the movable handle 6 (Fig 1) and an open open position (Fig. 2, 5) is movable.
- the pliers mouth 10 is formed between a first jaw part 11 and a second jaw part 12 .
- the first jaw part 11 and the second jaw part 12 are moved towards one another.
- the first jaw part 11 and the second jaw part 12 are moved away from one another.
- the function and design of the pliers mouth 10 are not essential, so that further explanations in this regard are unnecessary.
- the shaft has an effector instead of the forceps mouth 10, which can be, for example, scissors, a spreader, a clamp or the like.
- the push-pull element 4 is designed to transmit force and movement between the movable handle 6 and the jaws 10 of the pliers.
- the push-pull element 4 extends longitudinally between a proximal end 14 and a distal end 15 .
- the proximal end 14 is operatively connected to the movable handle 6
- the distal end 15 is operatively connected to the forceps mouth 10
- the push-pull element 4 is arranged in a cavity 13 of the shaft 3 so that it can move axially.
- the cavity 13 extends longitudinally between the proximal shaft end 8 and the distal shaft end 9 .
- the shaft 3 and the tension/compression element 4 are oriented coaxially.
- the push-pull element 4 is removed from the shaft 3, more precisely: pulled out of the cavity 13 in the proximal direction.
- the shaft 3 has an opening 16 opening into the cavity 13 at its proximal shaft end 8 .
- a fluid for example a cleaning liquid, a disinfecting solution or the like, can be introduced into the shaft 3 via the opening 16 .
- a fluid flow that occurs here flows from the opening 16 in the direction of the distal end of the shaft 9.
- the shaft 3 has a functional element 17 arranged in the cavity 13 .
- the functional element 17 serves to influence the said fluid flow in an advantageous manner in terms of flow technology.
- the functional element 17 has a plurality of fluid guide vanes 18 which are offset in the circumferential direction of the shaft 3 (see FIG. 7).
- the fluid guide vanes 18 are set up to generate a twist in the fluid flow directed in the circumferential direction of the shaft 3 .
- the fluid guide vanes 18 bring about a deflection of the fluid flow in the circumferential direction of the shaft 3.
- the rotational flow component of the fluid flow associated with this deflection can be referred to as swirl or turbulence.
- the functional element 17 can also be referred to as a twist, vortex or turbulence generator.
- the opening 16 for introducing said fluid is only accessible when the shank 3 is detached from the handle device 2 and the push-pull element 4 is removed from the shank 3 (dismantling state).
- the opening is arranged on a radial outside of the proximal end of the shaft and is therefore also accessible when the medical forceps 1 is in its ready-to-use assembled state (FIG. 1).
- the push-pull element 4 is operatively connected to the pliers mouth 10 by means of the functional element 17 . Consequently, the functional element 17 acts at the same time as a mechanical transmission element for force and movement transmission from the push-pull element 4 to the pliers mouth 10 and/or vice versa.
- the functional element 17 has a proximally arranged first support section 19 and a distally arranged second support section 20 (see FIG. 8). In the mounted state, the first support section 19 interacts with a distal front end 21 of the push-pull element 4 together.
- the second support section 20 acts at least indirectly on the pliers mouth 10. In the present case, the second support section 20 is supported in the distal direction on a component 22 of the pliers mouth 10.
- the pull-push element 4 can basically act on the pliers mouth 10 by pulling and/or by pushing or pushing. In the embodiment shown, a distal movement of the push-pull element 4 causes the forceps mouth 10 to close. Accordingly, the push-pull element 4 acts on pressure or push and can also be referred to as a push or push element.
- the shearing force required to close the pliers mouth 10 is transmitted from the push-pull element 4 via its distal front end 21 to the first support section 19 and from there via the second support section 20 to the component 22 . The same applies to the axial movement that occurs here.
- the functional element 17 can be moved axially together with the push-pull element 4 .
- the push-pull element interacts with the functional element when under tension.
- the push-pull element and the functional element are joined together in a manner known to those skilled in the art in a way that transfers tensile force, for example by means of a screw connection or the like.
- the functional element 17 is screwed to the component 22 .
- the functional element 17 has an axial through hole 23 for this purpose.
- the through bore 23 can be provided with a thread which is screwed to a counter-thread of the component 22 .
- the through hole 23 can be set up to accommodate a connecting screw, which in turn is screwed to the component 22 .
- a spring element 24 is also arranged in the cavity 13 .
- the spring element 24 is used for a spring-loaded return of the push-pull element 4 in the proximal direction.
- the spring element 24 is operatively connected to the push-pull element 4 by means of the functional element 17 .
- the spring element 24 is supported axially on a distally arranged third support section 25 of the functional element 17 .
- the restoring force of the spring element 24 acts in the proximal direction on the third support section 25 and from there via the first support section 19 on the distal front end 21 of the push-pull element 4.
- the axial force and axial movement occurring here is transmitted starting from the distal front end 21 via the first support section 19 to the third support section 25 and from there on to the spring element 24.
- the spring element 24 prestressed.
- the spring element 24 is supported in an axially immovable manner on a section of the shaft 3 that is not designated in any more detail.
- the functional element 17 consequently also acts as a mechanical transmission element for force and movement transmission between the push-pull element 4 and the spring element 24.
- the spring element 24 is a helical spring 26 wound in the circumferential direction of the shaft 3.
- the fluid guide vanes 18 are designed and/or arranged in such a way that a direction of the generated swirl of the fluid flow and a winding direction of the helical spring 26 are in the same direction are oriented.
- the winding direction of the helical spring 26 is oriented clockwise—with respect to a viewing direction directed axially in the direction of the distal shaft end 9 .
- the fluid guide vanes 18 are inclined and/or pitched clockwise with respect to the distal direction. Due to the orientation in the same direction between the coiling direction of the helical spring 26 and the twisting direction of the functional element 17, a particularly simple and thorough cleaning in the area of the spring element 24 can be achieved.
- the fluid guide vanes 18 each have a fitting surface 27 oriented radially outwards.
- the functional element 17 is held in the cavity 13 by means of a fit between the fitting surfaces 27 and an inner wall surface 28 of the shaft 3 oriented radially inwards.
- the functional element 17 is held in a form-fitting manner on the inner wall surface 28 by means of said fit in the radial direction R of the cavity 13 and/or the shaft 3 .
- the fit in the present case is a loose fit. The loose fit allows relative sliding mobility between the fitting surfaces 27 and the inner wall surface 28 in the axial direction A.
- the functional element is fixed with respect to the axial direction relative to the cavity and/or shaft. The fit can accordingly be designed as a press fit.
- the functional element 17 has a circular-cylindrical basic shape G, which is provided with a plurality of incisions 29 offset in the circumferential direction.
- One of the fluid guide vanes 18 is arranged between each two incisions 29 .
- the incisions 29 extend in the radial direction R from the outside to the inside.
- the incisions 29 are inclined and/or set. This can be seen in particular from FIG. 6 .
- the functional element 17 extends axially between a proximal end 30 and a distal end 31 .
- the functional element 17 has a concave recess 32 starting from the proximal end 30 .
- the concave recess 32 is arched in the distal direction.
- a normal direction of the first support section 19 is oriented parallel to the axial direction A and proximally.
- the normal directions of the second support section 20 and the third support section 25 are each parallel to the axial direction A and oriented distally.
- the support sections 19, 20, 25 are each designed as annular surfaces.
- the functional element 17 is manufactured in one piece.
- a plastic material K is selected as the material.
- a Meta II material and/or a multi-part production of the functional element can be provided instead.
- the shank has an outer tube 33 , an inner tube 34 , a shank attachment 35 and a shank extension 36 .
- the outer tube 33 and the inner tube 34 each extend longitudinally between the proximal shaft end 8 and the distal shaft end 9 .
- the outer pipe 33 and the inner pipe 34 are oriented coaxially along the axial direction A.
- the outer tube 33 has a circular-cylindrical hollow cross-section. The same applies to the inner tube 34.
- the outer tube 33 delimits the cavity 13, which is correspondingly circular-cylindrical.
- the inner tube 34 is arranged in the cavity 13 .
- the inner tube 34 is mounted firmly in the outer tube 33 by means of a plurality of bearing elements 37 .
- the bearing elements 37 are ring-shaped in the present case.
- An unspecified inner lateral surface of the outer tube 33 forms the inner wall surface 28 of the shank 3.
- the inner tube 34 is used in particular for axially movable mounting and/or guidance of the push-pull element 4 connected to the outer tube 33 and/or inner tube 34 and serves in particular as a connecting element for the detachable connection of the shaft 3 to the handle device 2.
- the shaft attachment 35 has an inner cone 38 which is complementary to an outer cone 39 of the handle device 2.
- the inner cone 38 and the outer cone 39 are detachably plugged together along the axial direction A in the assembled state (FIG. 1).
- a screw, snap-in and/or clamp connection can be present between the proximal end of the shaft 8 and the handle device 2 .
- the opening 16 is arranged on the shaft extension 36 .
- the shaft extension 36 has a fluid connector 40 assigned to the opening 16 .
- the fluid connector 40 is a Luer lock connector 41 with an external thread 42 and an internal cone 43 .
- the shaft extension 36 is oriented coaxially with the shaft attachment 35 . The latter is coaxial with the inner tube 34 and/or the outer tube 33.
- the shaft extension 36 has a lumen 44 which extends from the opening 16 in the distal direction. The lumen 44 opens into the inner tube 34 and thus at least indirectly also into the outer tube 33 and/or the cavity 13.
- the shaft extension 36 has a notch 45 which, for the purpose of locking the plug-in connection formed between the inner cone 38 and the outer cone 39, interacts with a pawl 46 present on the handle device 2.
- the design and function of said lock is irrelevant with regard to the present invention. The same applies correspondingly with regard to the transmission of force and movement between the movable handle 6 and the proximal end 14 of the push-pull element 4. The aforementioned aspects of the present embodiment are therefore not explained in more detail.
- the shaft extension 36 has a plurality of flushing channels 47 branching off from the lumen 44 in the radial direction. Starting from the lumen 44 , the flushing channels 47 extend in the radial direction R to an outside of the shaft extension 36 . As a result, the fluid flow introduced into the opening 16 for cleaning purposes can reach the region of the inner cone 38 of the shaft attachment 35 through the flushing channels 47 . This allows the shaft 3 to be cleaned even better.
- the flushing channels 47 can be arranged in different positions and aligned differently in relation to the flow direction of the fluid flow. The purpose of the present embodiment is to ensure that the fluid flow is conducted via the flushing channels 47 to a distal front edge 48 of the inner cone 38 .
- cleaning can be carried out as follows:
- the shaft 3 is dismantled from the handle device 2 .
- the plug-in connection between the proximal shaft end 8 and the handle device 2 is released.
- the inner cone 38 is pulled off the outer cone 39 and/or vice versa.
- the pawl-notch connection present between the pawl 36 and the notch 45 for the purpose of locking the plug-in connection is released.
- the push-pull element 4 is pulled out of the shaft 3 in the proximal direction. In the present case, this takes place through the opening 16 .
- a fluid line provided with a fluid connector is then connected to the fluid connector 40 of the shaft 3 .
- the fluid intended for cleaning for example a cleaning liquid or disinfecting solution
- the resulting fluid flow flows axially in the direction of the distal shaft end 9.
- the fluid flow proceeds from the fluid line through the opening 16 into the lumen 44 and from there on into the inner tube 34.
- the fluid flow flows in the region of a distal end, which is not specified in detail of the inner tube 34, hits the functional element 17, is provided with said twist and/or swirled by the functional element 17 and then hits the spring element 24.
- the inner tube 34, the outer tube 33 and the bearing elements 37 can be designed in such a way that a proximal backflow can occur in the annular space 49 formed between the outer tube 33 and the inner tube 34, which in the region of the shank attachment 35 in FIG Openings and / or columns from the shaft 3 emerges.
- the annular space 49 is sealed in a fluid-tight manner.
- the inner tube 34 and the outer tube 33 are welded to one another in the area of the bearing elements 37 in a materially bonded manner.
- flushing channels 47 cause the fluid flow to exit the lumen 44 in the radial direction and impinge on the leading edge 48 .
- the bottom of the "bore" or the inner cone 38 is cleaned with excess pressure.
- the liquid used can flow off in the proximal direction along the inner cone 38.
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- Health & Medical Sciences (AREA)
- Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Medical Informatics (AREA)
- Animal Behavior & Ethology (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Veterinary Medicine (AREA)
- Molecular Biology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Ophthalmology & Optometry (AREA)
- Reproductive Health (AREA)
- Vascular Medicine (AREA)
- Surgical Instruments (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102021208391.9A DE102021208391A1 (de) | 2021-08-03 | 2021-08-03 | Medizinisches Instrument |
| PCT/EP2022/070885 WO2023011975A1 (de) | 2021-08-03 | 2022-07-26 | Medizinisches instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4178466A1 true EP4178466A1 (de) | 2023-05-17 |
Family
ID=83059320
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP22758430.7A Pending EP4178466A1 (de) | 2021-08-03 | 2022-07-26 | Medizinisches instrument |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US12458386B2 (de) |
| EP (1) | EP4178466A1 (de) |
| JP (1) | JP2024528180A (de) |
| CN (1) | CN117794471A (de) |
| DE (1) | DE102021208391A1 (de) |
| WO (1) | WO2023011975A1 (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102023134397A1 (de) * | 2023-12-08 | 2025-06-12 | Aesculap Ag | Chirurgisches minimalinvasive Instrument |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1945659C3 (de) | 1969-09-09 | 1981-11-26 | Robert Edward Los Alamitos Calif. Marsh | Druckbehälter für ein Fluid |
| US5339800A (en) * | 1992-09-10 | 1994-08-23 | Devmed Group Inc. | Lens cleaning means for invasive viewing medical instruments with anti-contamination means |
| DE4307539B4 (de) | 1993-03-10 | 2005-08-25 | Karl Storz Gmbh & Co. Kg | Medizinische Zange |
| JP4847027B2 (ja) * | 2005-02-21 | 2011-12-28 | オリンパスメディカルシステムズ株式会社 | 処置具および処置具システム |
| DE102005021234A1 (de) * | 2005-05-09 | 2006-11-16 | Karl Storz Gmbh & Co. Kg | Medizinisches Instrument |
| JP5220435B2 (ja) | 2008-02-20 | 2013-06-26 | オリンパスメディカルシステムズ株式会社 | 洗浄チューブ、及び内視鏡洗浄消毒装置 |
| US9072523B2 (en) * | 2010-11-05 | 2015-07-07 | Ethicon Endo-Surgery, Inc. | Medical device with feature for sterile acceptance of non-sterile reusable component |
| DE202011000828U1 (de) | 2011-04-07 | 2011-06-01 | Aesculap AG, 78532 | Chirurgischer Instrumentenschaft und chirurgisches Instrument |
| US9510891B2 (en) * | 2012-06-26 | 2016-12-06 | Covidien Lp | Surgical instruments with structures to provide access for cleaning |
| US11432902B2 (en) * | 2015-04-10 | 2022-09-06 | Covidien Lp | Surgical devices with moisture control |
| EP3599980B1 (de) * | 2017-03-20 | 2022-07-27 | Covidien LP | Wiederverwendbare endoskopische chirurgische vorrichtung |
| US10881424B2 (en) * | 2018-02-13 | 2021-01-05 | Covidien Lp | Removable fluid reservoir and ultrasonic surgical instrument including the same |
| CN112566562A (zh) * | 2018-08-14 | 2021-03-26 | 柯惠Lp公司 | 包含便于清洁的功能的手术装置 |
-
2021
- 2021-08-03 DE DE102021208391.9A patent/DE102021208391A1/de active Pending
-
2022
- 2022-07-26 CN CN202280053723.0A patent/CN117794471A/zh active Pending
- 2022-07-26 WO PCT/EP2022/070885 patent/WO2023011975A1/de not_active Ceased
- 2022-07-26 US US18/292,916 patent/US12458386B2/en active Active
- 2022-07-26 EP EP22758430.7A patent/EP4178466A1/de active Pending
- 2022-07-26 JP JP2024506535A patent/JP2024528180A/ja active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| DE102021208391A1 (de) | 2023-02-09 |
| CN117794471A (zh) | 2024-03-29 |
| JP2024528180A (ja) | 2024-07-26 |
| US20240415530A1 (en) | 2024-12-19 |
| WO2023011975A1 (de) | 2023-02-09 |
| US12458386B2 (en) | 2025-11-04 |
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