摘要:
A medical punch with a hollow shaft, a tool point that is positioned on the distal end of the shaft and includes a rigid cutting part and a cutting part that can slide with respect to the rigid cutting part, and with a handle positioned on the proximal end of the shaft, such that the displaceable cutting part and the handle are operatively connected with one another by a push/pull device that is displaceably mounted in the hollow shaft and an anti-tilt mechanism is positioned on the tool point to stabilize the cutting parts in their axially parallel alignment to one another. The rigid cutting part includes a sleeve-shaped proximal portion that encloses the displaceable cutting part and a distal punch portion configured as a single unit with the sleeve-shaped portion and that the rigid cutting part should be detachably connected with the hollow shaft by a coupling mechanism formed on the sleeve-shaped portion.
摘要:
A medical punch with a hollow shaft, a tool point that is positioned on the distal end of the shaft and includes a rigid cutting part and a cutting part that can slide with respect to the rigid cutting part, and with a handle positioned on the proximal end of the shaft, such that the displaceable cutting part and the handle are operatively connected with one another by a push/pull device that is displaceably mounted in the hollow shaft and an anti-tilt mechanism is positioned on the tool point to stabilize the cutting parts in their axially parallel alignment to one another. The rigid cutting part includes a sleeve-shaped proximal portion that encloses the displaceable cutting part and a distal punch portion configured as a single unit with the sleeve-shaped portion and that the rigid cutting part should be detachably connected with the hollow shaft by a coupling mechanism formed on the sleeve-shaped portion.
摘要:
The balloon trepan is used in minimal invasive surgery in order to create or maintain the area required for an operation by dilation of tissue or dissection of layers of tissue. The connection between the balloon and the sleeve of the trepan must be easily and securely produced without enlarging the outer diameter of the balloon trepan. The balloon must be secured against slipping and must be able to resist pressure during inflation. The balloon surrounding the distal end of the trepan is pressed against a peripheral step formed on the sleeve of the trepan by a clamping element in order to fix it to the sleeve of the trepan. The clamping element is displaced by rotation of at least one part of the clamping element about a longitudinal axis of the sleeve of the trepan in a longitudinal direction in relation to the said sleeve.
摘要:
The balloon trepan is used in minimal invasive surgery in order to create or maintain the area required for an operation by dilation of tissue or dissection of layers of tissue. The connection between the balloon and the sleeve of the trepan must be easily and securely produced without enlarging the outer diameter of the balloon trepan. The balloon must be secured against slipping and must be able to resist pressure during inflation. The balloon (11, 12) surrounding the distal end of the trepan (15, 16) is pressed against a peripheral step (66, 95) formed on the sleeve of the trepan (15, 16) by means of a clamping element (18, 102) in order to fix it to the sleeve (15, 16) of the trepan. The clamping element (18, 102) is displaced by rotation of at least one part of the clamping element (18, 102) about a longitudinal axis of the sleeve (15, 16) of the trepan in a longitudinal direction in relation to the said sleeve (15, 16).
摘要:
A sealing means for sealing an introduction facility for a medical instrument includes a first sealing membrane of an elastic material with a first slit and a second sealing membrane of an elastic material with a second slit. The first sealing membrane and the second sealing membrane abut laminarily on each other. The first sealing membrane and the second sealing membrane are arranged such that the first slit and the second slit are not parallel with each other. Each of the first slit and the second slit is unbranched.
摘要:
A medical instrument serves for spreading vertebral bodies apart and for operations in an area of a spinal column. A sleeve is provided and several spreadable elements protrude from a distal end of said sleeves. Said several spreadable elements are folded together to form a conical body, said conical body serves for inserting between adjacent vertebral bodies of a spinal column. A spreader is provided which can be driven into said conical body thereby spreading said several spreading elements, said spreading elements pushing away said two adjacent vertebral bodies.
摘要:
The invention relates to a medical instrument with a hollow instrument canal that is configured inside a housing and can be closed by means of at least one valve body and rotated into open position by means of an instrument inserted into the instrument canal. The at least one valve body is configured as a flap consisting of an essentially non-bendable material mounted on the housing so that it can be rotated by means of an elastic, bendable connecting element configured as a wire spring in such a way that the valve body is pre-tensioned in the closed direction. A medical instrument with a valve body of simple construction, which insulates reliably, is distinguished according to the invention in that the connecting element on the one hand is secured on the housing and on the other hand carries the valve body, so that the connecting element can be secured in a ring groove configured in the housing.
摘要:
A medical access device for creating an access to a body for minimally invasive intervention has a hollow body assembled from at least two parts having longitudinal extending edges. Each part has a distal body portion and at an angle to the latter a proximal body portion. A locking mechanism locks the assembled proximal hollow body portions. The locking mechanism has a hook projecting from an edge of a proximal body. A nose of the hook can enter from proximal to distal in a recess in an edge joining said edge having said hook.
摘要:
A device is used for inserting at least one anchor piece into a hollow space of a living being, in order to fix a wall of the hollow space temporarily to a wall of the body by means of the at least one anchor piece. It is proposed that the device has two shaft-like elements which are axially movable relative to one another and by which the at least one anchor piece is held captive at its axially spaced apart opposite ends, and moreover has an actuating mechanism via which the at least one element can be moved in such a way that the anchor piece held by it is released.
摘要:
The invention relates to a valve device for medical instruments, in particular trocars, having a valve body configured as a flap for opening and closing an instrument and/or flow channel, which is positioned rotatably on a rotation axle positioned in a housing. To create a valve device, which combines simple and cost-effective structure with good cleaning properties, it is proposed with the invention that the rotation axle is configured in several components, such that the individual components of the rotation axle can be connected to one another by spiral-shaped guide tracks.