1. A device for use with a biopsy cannula, the device comprising:
a guiding portion defining a shaft aperture sized to receive and at least partially circumferentially encompass the biopsy cannula;
a locking portion positioned to engage the biopsy cannula preventing inadvertent proximal movement of the guiding portion relative to the biopsy cannula; and
a transverse portion attached to the guiding portion positioned to block distal insertion of the biopsy cannula at a desired depth, wherein the transverse portion comprises an outer ring, the guiding portion comprising an inner portion encompassed by the outer ring supporting the locking portion comprising a pivoting member rotatable to partially block the shaft aperture, wherein the guiding portion is operably configured to deflect the locking portion out of engagement with the biopsy cannula when the outer ring is compressed.
2. The device of claim 1, wherein the biopsy cannula has an elongate transverse cross section, the shaft aperture defined in the guiding portion having an inner diameter sized to allow relative longitudinal movement over the biopsy cannula in a first angular orientation and to bind against the biopsy cannula in a second angular orientation when rotated.
3. The device of claim 2, wherein the guiding and transverse portions comprise an elastomeric ring, the locking portion comprising an elastomeric structure defined across a portion of the inner diameter brought into contact with the biopsy cannula at the second angular orientation.
4. The device of claim 2, wherein the guiding and transverse portions comprise an elastomeric ring, the locking portion comprising a reduced diameter generally orthogonal to a diameter defined by the elongate cross section.
5. The device of claim 2, wherein an outer diameter of a selected one of the guiding portion and transverse portion presents a noncircular gripping surface.
6. The device of claim 1, wherein the transverse portion comprises a distally oriented transverse planar member defining a distal aperture sized to approximate a transverse cross section of the biopsy cannula, the guiding portion comprising a sloped planar member attached at one edge to an outer edge of the transverse planar member and having an opposite end sized to extend beyond an opposite lateral side of the biopsy probe, the shaft aperture comprising an elongate hole sized to allow the biopsy cannula to pass through when also passing through the distal aperture, the locking portion comprising a distally projecting actuating member attached to an edge of the sloped planar member opposite to the attachment to the transverse planar member, the locking portion further comprising a proximal lip on an edge of the transverse planar member opposite to the attachment to the sloped planar member and positioned to underly an unactuated locking member wherein the shaft aperture shifts into binding engagement with the biopsy cannula out of longitudinal alignment with the distal aperture.
7. The device of claim 1, further comprising an elastomeric body having a first jaw and second jaw shaped for binding opposition against the biopsy cannula, a first transverse portion extending laterally from the first jaw and a second transverse portion extending laterally from the second jaw, the first and second transverse portions positioned for coordinated deflection to unlock the first and second jaws for longitudinal positioning on the biopsy cannula.
8. The device of claim 1, further comprising a first unlocking member of the first guiding portion laterally offset from the first pivoting member and extending toward an opposite side of an inner diameter of the outer ring proximate to a second pivoting member supported by a second guiding portion that in turn has a second unlocking member extending toward the first pivoting member.
9. An apparatus, comprising:
a biopsy cannula;
a plurality of depth of insertion measurement indicia on an outer surface of the biopsy cannula; and
a device comprising:
a guiding portion defining a shaft aperture sized to receive and at least partially circumferentially encompass the biopsy cannula,
a locking portion positioned to engage the biopsy cannula preventing inadvertent proximal movement of the guiding portion relative to the biopsy cannula, and
a transverse portion attached to the guiding portion positioned to block distal insertion of the biopsy cannula at a desired depth, wherein the transverse portion of the device comprises an outer ring, the guiding portion comprising an inner portion encompassed by the outer ring supporting the locking portion comprising a pivoting member rotatable to partially block the shaft aperture, wherein the guiding portion of the device is operably configured to deflect the locking portion out of engagement with the biopsy cannula when the outer ring is compressed.
10. The apparatus of claim 9, wherein the biopsy cannula has an elongate transverse cross section, the shaft aperture defined in the guiding portion having an inner diameter sized to allow relative longitudinal movement over the biopsy cannula in a first angular orientation and to bind against the biopsy cannula in a second angular orientation when rotated.
11. The apparatus of claim 10, wherein the guiding and transverse portions comprise an elastomeric ring, the locking portion comprising an elastomeric structure defined across a portion of the inner diameter brought into contact with the biopsy cannula at the second angular orientation.
12. The apparatus of claim 10, wherein the guiding and transverse portions of the device comprise an elastomeric ring, the locking portion comprising a reduced diameter generally orthogonal to a diameter defined by the elongate cross section.
13. The apparatus of claim 10, wherein an outer diameter of a selected one of guiding portion and transverse portion of the device presents a noncircular gripping surface.
14. The apparatus of claim 9, wherein the transverse portion comprises a distally oriented transverse planar member defining a distal aperture sized to approximate a transverse cross section of the biopsy cannula, the guiding portion comprising a sloped planar member attached at one edge to an outer edge of the transverse planar member and having an opposite end sized to extend beyond an opposite lateral side of the biopsy probe, the shaft aperture comprising an elongate hole sized to allow the biopsy cannula to pass through when also passing through the distal aperture, the locking portion comprising a distally projecting actuating member attached to an edge of the sloped planar member opposite to the attachment to the transverse planar member, the locking portion further comprising a proximal lip on an edge of the transverse planar member opposite to the attachment to the sloped planar member and positioned to underly an unactuated locking member wherein the shaft aperture shifts into binding engagement with the biopsy cannula out of longitudinal alignment with the distal aperture.
15. The apparatus of claim 9, wherein the device further comprises an elastomeric body having a first jaw and second jaw shaped for binding opposition against the biopsy cannula, a first transverse portion extending laterally from the first jaw and a second transverse portion extending laterally from the second jaw, the first and second transverse portions positioned for coordinated deflection to unlock the first and second jaws for longitudinal positioning on the biopsy cannula.
16. The apparatus of claim 9, further comprising a first unlocking member of the first guiding portion of the device laterally offset from the first pivoting member and extending toward an opposite side of an inner diameter of the outer ring proximate to a second pivoting member supported by a second guiding portion that in turn has a second unlocking member extending toward the first pivoting member.
17. The apparatus of claim 9, wherein the measurement indica in the biopsy cannula further comprise grooves.
18. The apparatus of claim 17, wherein the grooves further comprise longitudinally ramped grooves.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A pressure vessel for a membrane element into which the membrane element is inserted through one open end, wherein an inner circumferential surface of the pressure vessel is subjected to a frictional resistance reduction process that reduces a frictional resistance between the membrane element inserted into the pressure vessel and the inner circumferential surface when the membrane element is inserted.
2. The pressure vessel for a membrane element according to claim 1, wherein the frictional resistance reduction process is intermittently performed in a direction of inserting the membrane element.
3. The pressure vessel for a membrane element according to claim 1, wherein the frictional resistance reduction process is linearly performed in a direction of inserting the membrane element.
4. The pressure vessel for a membrane element according to claim 1, wherein the frictional resistance reduction process is providing a recess or a protrusion for reducing a contact area to the membrane element on the inner circumferential surface of the pressure vessel.
5. The pressure vessel for a membrane element according to claim 4, wherein at least one ridge line that is brought into contact with the membrane element at the recess or protrusion extends along the direction of inserting the membrane element.
6. The pressure vessel for a membrane element according to claim 4, wherein at least one protrusion that is brought into contact with the membrane element is further provided on a bottom surface of the recess.
7. The pressure vessel for a membrane element according to any one of claim 1, wherein the frictional resistance reduction process is providing a rotor on the inner circumferential surface of the pressure vessel.
8. The pressure vessel for a membrane element according to claim 1, wherein the frictional resistance reduction process is fixing a member having a higher sliding property than the inner circumferential surface of the pressure vessel.
9. The pressure vessel for a membrane element according to claim 1, wherein the membrane element is a cylindrical spiral-type membrane element in which a plurality of reverse osmosis membranes, a feed side flow path material, and a permeate side flow path material in a laminated state are wound around a core tube.
10. A membrane filtration apparatus equipped with a pressure vessel for a membrane element according to claim 1.
11. A method for manufacturing a membrane filtration apparatus, wherein a membrane element is mounted onto an inside of a pressure vessel while bringing the membrane element into contact with a part of an inner circumferential surface of the pressure vessel that has been subjected to a frictional resistance reduction process.
12. The pressure vessel for a membrane element according to claim 5, wherein at least one protrusion that is brought into contact with the membrane element is further provided on a bottom surface of the recess.
13. A pressure vessel for a membrane element into which the membrane element is inserted through one open end, said vessel comprising:
an internal chamber that accommodates a membrane element; and
an inner circumferential surface of the pressure vessel that has been subjected to a frictional resistance reduction process that reduces a frictional resistance between the membrane element inserted into the pressure vessel and the inner circumferential surface when the membrane element is inserted.