WO1998017341B1 - Hemostasis valve, system and assembly - Google Patents
Hemostasis valve, system and assemblyInfo
- Publication number
- WO1998017341B1 WO1998017341B1 PCT/US1997/019146 US9719146W WO9817341B1 WO 1998017341 B1 WO1998017341 B1 WO 1998017341B1 US 9719146 W US9719146 W US 9719146W WO 9817341 B1 WO9817341 B1 WO 9817341B1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- hemostasis valve
- lumen
- operating device
- valve body
- hemostasis
- 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.)
- Ceased
Links
Abstract
A hemostasis valve including a collapsible membrane in a portion of a through-lumen. Fluid pressure in a chamber surrounding the collapsible membrane assists in sealing the collapsible membrane around an operating device inserted through the hemostasis valve. Different mechanisms for mechanically deforming the collapsible membrane to assist in sealing are disclosed. Also, a system for continuously flushing a vascular catheter connected to a hemostasis valve at a rate of 0.10 to 10.0 cubic centimeters per minute, and a hemostasis valve assembly including an expandable reservoir which stores liquid volume under pressure.
Claims
1. A hemostasis valve comprising:
(a) a valve body having a proximal end for receiving an operating device and a distal end for connection to a guide catheter;
(b) a through-lumen in said valve body intermediate said proximal and distal ends, wherein an operating device is inserted through said through-lumen and into a guide catheter;
(c) a chamber in said valve body surrounding said through-lumen, said chamber being filled with fluid under pressure;
(d) a collapsible membrane in a portion of said through-lumen constructed and arranged such that the fluid pressure in said chamber assists in sealing said collapsible membrane around an operating device; and
(e) means for mechanically deforming said collapsible membrane, whereby the sealing of said collapsible membrane around an operating device is further assisted by said mechanical deforming means .
2. A hemostasis valve according to claim 1, further including a variable pressure source capable of providing sufficient fluid pressure in said chamber to completely seal said collapsible membrane around the operating device.
3. A hemostasis valve according to claim 1, wherein said mechanical deforming means comprise a clamp which applies radially directed pressure to said collapsible membrane .
4. A hemostasis valve according to claim 3, wherein said clamp applies pressure by deforming an outer flexible membrane surrounding said chamber, thereby increasing the fluid pressure in said chamber and in turn deforming said collapsible membrane.
5. A hemostasis valve according to claim 3, wherein said clamp includes two feet inserted through corresponding openings in an outer wall of said valve body.
6. A hemostasis valve according to claim 1, wherein said mechanical deforming means comprise proximal and distal portions of said through-lumen on opposite sides of said collapsible membrane, one of said portions being rotatable relative to said valve body to twist said collapsible membrane.
7. A hemostasis valve according to claim 1, wherein said mechanical deforming means includes a spring which biases said mechanical deforming means to a closed position.
8. A hemostasis valve comprising:
(a) a valve body having a proximal end for receiving an operating device and a distal end for connection to a guide catheter; (b) a through-lumen in said valve body intermediate said proximal and distal ends, wherein an operating device is inserted through said through-lumen and into a guide catheter;
(c) said through-lumen comprising a proximal portion, a distal portion and an elastomeric sleeve therebetween;
(d) one of said proximal and distal portions of said through-lumen being rotatable relative to said valve body between a closed position wherein said elastomeric sleeve is twisted to seal around an operating device and an open position wherein said elastomeric sleeve is sufficiently untwisted to
18 unseal said elastomeric sleeve from an operating device; and
(e) a spring, connected to said rotatable portion of said through-lumen, which resists rotation of said rotatable portion from said closed position to said open position.
9. A hemostasis valve according to claim 8, wherein - said rotatable portion of said through-lumen is connected to an adjustment knob which is rotatably mounted on said valve body.
10. A hemostasis valve according to claim 9, wherein said rotatable portion of said through-lumen is said proximal portion and said adjustment knob is mounted proximate said proximal end of said valve body.
11. A hemostasis valve according to claim 10, wherein said spring is a coil spring around a portion of said valve body.
12. A system for flushing a vascular catheter, comprising:
(a) a hemostasis valve; (b) a vascular catheter for insertion into a patient, sealingly connected to said hemostasis valve;
(c) a source for providing flushing fluid under pressure, in fluid communication with said hemostasis valve; and
(d) means for controlling the flow of said flushing fluid from said source to said hemostasis valve at a rate of about between 0.10 to 10.0 cubic centimeters per minute, thereby continuously flushing said vascular catheter.
13. A system according to claim 12, wherein said flow controlling means comprise a flow restricting orifice.
19
14. A system according to claim 12, wherein said flow controlling means comprise a narrow tube having a diameter and length appropriate for achieving a predetermined flow rate.
15. A system according to claim 12, further comprising a pressure monitor.
16. A system according to claim 12, further comprising means for periodically flushing said vascular catheter at a relatively high rate.
17. An assembly for maintaining hemostasis in a patient, comprising:
(a) a hemostasis valve including a sealing member, moveable between a closed position, wherein liquid in said valve in fluid communication with a patient is sealed by said sealing member, and an open position; and
(b) an expandable reservoir in fluid communication with the liquid in said hemostasis valve, moveable between expanded and retracted positions;
(c) said expandable reservoir being constructed and arranged such that, when said hemostasis valve is moved to said open position, said expandable reservoir retracts toward said retracted position so as to force the liquid out of said open hemostasis valve.
18. An assembly according to claim 17, wherein said reservoir is an elastomeric bellows-like diaphragm.
19. An assembly according to claim 17, wherein said reservoir can be substantially expanded by a liquid pressure of about between 60 to 120 millimeters of mercury.
20
20. A hemostasis valve according to claim 1, further including means for providing fluid communication between said through-lumen and chamber.
21
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP51962498A JP4117405B2 (en) | 1996-10-23 | 1997-10-17 | Hemostasis valve, system and assembly |
| CA002266959A CA2266959A1 (en) | 1996-10-23 | 1997-10-17 | Hemostasis valve, system and assembly |
| AT97911884T ATE284240T1 (en) | 1996-10-23 | 1997-10-17 | VALVE FOR HEMOSTASIS |
| AU49155/97A AU4915597A (en) | 1996-10-23 | 1997-10-17 | Hemostasis valve, system and assembly |
| DE69731892T DE69731892T2 (en) | 1996-10-23 | 1997-10-17 | VALVE FOR HEMOSTASIS |
| EP97911884A EP0934095B1 (en) | 1996-10-23 | 1997-10-17 | Hemostasis valve |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US08/735,521 US5895376A (en) | 1996-10-23 | 1996-10-23 | Hemostasis valve, system and assembly |
| US08/735,521 | 1996-10-23 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| WO1998017341A2 WO1998017341A2 (en) | 1998-04-30 |
| WO1998017341A3 WO1998017341A3 (en) | 1998-06-11 |
| WO1998017341B1 true WO1998017341B1 (en) | 1998-08-13 |
Family
ID=24956146
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/US1997/019146 Ceased WO1998017341A2 (en) | 1996-10-23 | 1997-10-17 | Hemostasis valve, system and assembly |
Country Status (9)
| Country | Link |
|---|---|
| US (2) | US5895376A (en) |
| EP (1) | EP0934095B1 (en) |
| JP (1) | JP4117405B2 (en) |
| AT (1) | ATE284240T1 (en) |
| AU (1) | AU4915597A (en) |
| CA (1) | CA2266959A1 (en) |
| DE (1) | DE69731892T2 (en) |
| ES (1) | ES2234009T3 (en) |
| WO (1) | WO1998017341A2 (en) |
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-
1996
- 1996-10-23 US US08/735,521 patent/US5895376A/en not_active Expired - Lifetime
-
1997
- 1997-10-17 AU AU49155/97A patent/AU4915597A/en not_active Abandoned
- 1997-10-17 ES ES97911884T patent/ES2234009T3/en not_active Expired - Lifetime
- 1997-10-17 AT AT97911884T patent/ATE284240T1/en not_active IP Right Cessation
- 1997-10-17 EP EP97911884A patent/EP0934095B1/en not_active Expired - Lifetime
- 1997-10-17 CA CA002266959A patent/CA2266959A1/en not_active Abandoned
- 1997-10-17 WO PCT/US1997/019146 patent/WO1998017341A2/en not_active Ceased
- 1997-10-17 JP JP51962498A patent/JP4117405B2/en not_active Expired - Fee Related
- 1997-10-17 DE DE69731892T patent/DE69731892T2/en not_active Expired - Fee Related
-
1999
- 1999-01-29 US US09/240,743 patent/US6221057B1/en not_active Expired - Lifetime
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