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A suction valve for an instrument includes a valve insert secured in a valve housing. A first sleeve connects the interior of the valve housing to a first suction channel of the instrument; and a sealing membrane seals a first portion of the interior of the valve housing from the valve insert. The s

A suction valve for an instrument includes a valve insert secured in a valve housing. A first sleeve connects the interior of the valve housing to a first suction channel of the instrument; and a sealing membrane seals a first portion of the interior of the valve housing from the valve insert. The sealing membrane is fixed in the valve housing by the valve insert that includes a valve plunger for opening and closing the sealing membrane by movement in a first direction.

대표청구항 ▼

1. A suction valve for an instrument, comprising:a valve insert secured in a valve housing; a first sleeve for connecting the interior of the valve housing to a first suction channel of the instrument; a sealing membrane for sealing a first portion of the interior of the valve housing from the valve

1. A suction valve for an instrument, comprising:a valve insert secured in a valve housing; a first sleeve for connecting the interior of the valve housing to a first suction channel of the instrument; a sealing membrane for sealing a first portion of the interior of the valve housing from the valve insert, the sealing membrane fixed in the valve housing by the valve insert, the valve insert including a valve plunger for opening and closing the sealing membrane by movement in a first direction; and an abutment on an elastic web surrounding the valve plunger, the abutment operably interacting with the valve insert for limiting the movement of the valve plunger. 2. The suction valve of claim 1, where the movement in the first direction is substantially perpendicular to an axis of the sealing membrane.3. The suction valve of claim 1, further comprising:a second sleeve secured in the valve housing for connecting the valve insert with a second channel. 4. The suction valve of claim 1, wherein the valve housing further comprises a substantially cylindrical interior including one end for inserting the valve insert, and one end disposed with an opening for operably connecting the interior to the first sleeve.5. The suction valve of claim 4, wherein the exterior shape of the valve insert substantially mates with the interior of the valve housing.6. The suction valve of claim 1, wherein the sealing membrane substantially mates with a cross-section of the valve housing.7. The suction valve of claim 1, wherein the sealing membrane further comprises intersecting slits for dividing the sealing membrane.8. The suction valve of claim 1, wherein the sealing membrane is thicker in the center than near the edge.9. The suction valve of claim 8, wherein a first side of the sealing membrane is substantially conical.10. The suction valve of claim 8, wherein the slits are disposed at least in the center of the sealing membrane.11. The suction valve of claim 1, wherein a second side of the sealing membrane has a substantially conical recess.12. The suction valve of claim 1, wherein the periphery of the sealing membrane is disposed between a shoulder of the valve housing and the valve insert.13. The suction valve of claim 1, wherein slits are disposed interior to an annular groove on a side of sealing membrane proximal to the valve plunger.14. The suction valve of claim 2, wherein the second sleeve is transverse to a longitudinal axis of the valve housing.15. The suction valve of claim 1, wherein the valve housing further comprises a groove for securing the valve insert in the valve housing.16. The suction valve of claim 15, wherein the groove comprises a first area substantially parallel to the longitudinal axis of the valve housing and open toward an edge of the valve housing, and a second area substantially transverse to the first area in the circumferential direction of the valve housing.17. The suction valve of claim 15, wherein the groove has a width that corresponds to the cross-section of an outlet terminal secured in the valve housing for connecting the valve insert with a second channel.18. The suction valve of claim 1, wherein the valve insert in the direction of the longitudinal axis of the valve housing further comprises:a passage hole for moving the valve plunger in the longitudinal direction, and an exit for opening in a radial direction toward the passage hole; wherein the valve plunger is tubular and at a first side faces the sealing membrane and comprises an entry opening and at least one radial opening on the periphery for connecting with the exit. 19. The suction valve of claim 1, wherein the valve plunger further comprises a closed pressure cap at a distal end from the sealing membrane.20. The suction valve of claim 19, further comprising a sealing element disposed between the pressure cap and the valve insert, the sealing element for opening and closing a passage hole in the valve insert.21. The suction valve of claim 1, wherein the valve insert, the valve plunger, and the sealing membrane are an exchangeable unit.22. The suction valve of claim 1, wherein the interior of the valve insert further comprises an abutment for limiting the movement of the valve plunger.23. The suction valve of claim 1, the valve insert further comprises a projection on the periphery of the valve insert for engaging the sealing membrane.24. An instrument comprising:an endoscope, a suction valve rigidly connected to the endoscope, the suction valve comprising a valve insert secured in a valve housing; a first sleeve for connecting the interior of the valve housing to a first suction channel of the instrument; a sealing membrane for sealing a first portion of the interior of the valve housing from the valve insert, the sealing membrane fixed in the valve housing by the valve insert, the valve insert including a valve plunger for opening and closing the sealing membrane by movement in a first direction; and an abutment on an elastic web surrounding the valve plunger, the abutment operably interacting with the valve insert for limiting the movement of the valve plunger. 25. The instrument of claim 24, wherein the valve housing is integral with a part of the endoscope.26. A valve insert for a suction valve, comprising:a body defining an inner space and a main axis; a valve plunger for moving in a direction longitudinal to the main axis of the body of the valve insert under a pressure, the valve plunger having an abutment on an elastic web surrounding the valve plunger, the abutment operably interacting with the tubular body of the valve insert for limiting the movement of the valve plunger, a passage hole longitudinal to a main axis of the body of the valve insert for passing the pressure, and a radially extending sleeve for evacuating the pressure. 27. The valve insert of claim 26, further comprising a sealing membrane disposed on the end of the valve insert for opening and closing by the valve plunger.28. The valve insert of claim 26, wherein the valve plunger further comprisesan entry opening for passing the pressure, and a radial opening for passing the pressure to the sleeve; and wherein the valve plunger is substantially tubular. 29. The value insert of claim 28, wherein the valve plunger further comprises a closed pressure surface opposite the entry opening for directing the pressure.