Intrabody fluid transfer devices, systems and methods
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
G01R-033/28
A61M-005/158
A61B-010/02
A61B-005/055
G01R-033/34
A61M-039/02
출원번호
US-0468922
(2014-08-26)
등록번호
US-9891296
(2018-02-13)
발명자
/ 주소
Piferi, Peter
출원인 / 주소
MRI Interventions, Inc.
대리인 / 주소
Myers Bigel, P.A.
인용정보
피인용 횟수 :
0인용 특허 :
86
초록▼
Devices, kits, assemblies systems and methods for transferring fluid to or from a subject include an elongate guide cannula having opposing proximal and distal ends with an open axially extending lumen. The proximal end includes a connector. The devices also include an elongate needle having opposin
Devices, kits, assemblies systems and methods for transferring fluid to or from a subject include an elongate guide cannula having opposing proximal and distal ends with an open axially extending lumen. The proximal end includes a connector. The devices also include an elongate needle having opposing proximal and distal ends, the needle having a connector that is configured to attach to the guide cannula connector and is attached to or attachable to a length of flexible tubing, wherein the elongate needle is configured to be slidably inserted into the guide cannula lumen so that the distal end of the needle extends out of the distal end of the distal end of the guide cannula a suitable distance.
대표청구항▼
1. A surgical device for transferring fluid to or from a subject, comprising: an elongate guide cannula having opposing proximal and distal ends with an open axially extending lumen, wherein the proximal end comprises a guide cannula connector; andan elongate needle having a length with opposing pro
1. A surgical device for transferring fluid to or from a subject, comprising: an elongate guide cannula having opposing proximal and distal ends with an open axially extending lumen, wherein the proximal end comprises a guide cannula connector; andan elongate needle having a length with opposing proximal and distal ends extending between an intrabody segment and an external segment of the needle, wherein the needle comprises a needle-cannula connector that is configured to attach to the guide cannula connector above the intrabody segment, wherein at least a major portion of the external segment of the needle resides in a length of flexible tubing, and wherein the elongate needle is configured to be slidably inserted into the guide cannula lumen so that the distal end of the needle extends out of the distal end of the guide cannula. 2. The device of claim 1, wherein the elongate needle comprises fused silica glass and the distal end of the needle has a stepped configuration with a first segment having a first outer diameter that merges into a second end segment having a second smaller outer diameter, the second segment having a length that extends to a tip of the needle, and wherein the needle extends out of the guide cannula a distance between about 2 mm to about 30 mm. 3. The device of claim 1, wherein the needle-cannula connector releasably attaches to the guide cannula connector, and wherein the flexible tubing is attached to a proximal end portion of the needle-cannula connector and extends above the needle-cannula connector to encase a length of about 4-10 feet of the external segment of the needle therein. 4. The device claim 1, further comprising an elongate stylet having opposing proximal and distal ends, the distal end having a sharp tip and the proximal end comprising a stylet connector that releasably attaches to the guide cannula connector, wherein the stylet has a body that is slidably receivable in the cannula lumen. 5. The device of claim 1, wherein the needle is a fused silica glass needle, wherein the external segment of the needle comprises a portion that extends above the needle-cannula connector and this portion has a length in a range of about 4-10 feet, and wherein at least a major portion of the needle above the needle-cannula connector resides inside the flexible tubing. 6. The device of claim 1, further comprising a depth stop with an open lumen, the depth stop configured to reside directly on an outer surface of the elongate guide cannula at an upper to mid portion of the guide cannula with the guide cannula extending through the open lumen of the depth stop. 7. The device of claim 1, wherein the elongate guide cannula comprises a ceramic material. 8. The device of claim 1, wherein the elongate guide cannula has an outer polymeric coating and/or sleeve, and wherein the distal end of the guide cannula is tapered so that it has a smaller outer diameter at a tip relative to an outer diameter of the guide cannula rearward of the tip. 9. The device of claim 1, wherein the elongate needle is an infusate needle and has a stepped distal end configuration and is integrally attached to the flexible tubing as a subassembly, wherein the device further comprises a metal elongate stylet with a sharp tip on a distal end and a stylet connector on a proximal end, wherein the stylet and needle are releasably interchangeably attachable to the guide cannula connector, and wherein the needle, stylet and guide cannula are all MRI compatible for use in an MRI guided procedure. 10. An MRI compatible intrabody fluid transfer device for transferring a substance to and/or from a patient, comprising: a rigid tubular guide cannula having an open lumen extending therethrough with a guide cannula connector on a proximal end thereof;a needle having a length with an external segment and an intrabody segment, wherein the needle has a distal end portion, and wherein the needle is configured to be slidably insertable into the rigid guide cannula so that the needle connector attaches to the guide cannula connector and the distal end portion of the needle extends beyond a distal end of the tubular guide cannula;a needle connector attached to the needle above the intrabody segment configured to releasably couple to the guide cannula connector; andflexible tubing that encases about 4-10 feet of the external segment of the needle above the needle connector. 11. The device of claim 10, further comprising a metal stylet with a stylet connector configured to releasably interchangeably attach to the guide cannula connector in place of the needle with the needle connector. 12. The device of claim 11, wherein the guide cannula has an exterior surface on a distal end portion thereof that tapers down in size to a tip thereof to define a third coaxially disposed stepped segment that resides a distance rearward of the first and second segments and has a larger outer diameter than both the first and second segments. 13. The device of claim 10, wherein the tubular guide cannula comprises a ceramic material. 14. The device of claim 10, wherein the tubular guide cannula has an outer polymeric coating and/or sleeve. 15. The device of claim 10, wherein the distal end of the tubular guide cannula is tapered so that it has a smaller outer diameter at a tip relative to an outer diameter of the guide cannula rearward of the distal end. 16. The device of claim 10, wherein the tubular guide cannula comprises a ceramic material and a conformal outer polymeric sleeve. 17. The device of claim 10, wherein the distal end portion of the needle that extends out of the tubular guide cannula has at least first and second segments that are co-axially disposed with different outer diameters, with a smallest sized outer diameter of the first segment extending to a tip thereof. 18. The device of claim 17, wherein the first smallest outer diameter segment has a longitudinal length of between about 1 mm to about 10 mm, wherein the second segment has a longitudinal length of between about 2 mm to about 20 mm, and wherein a distal tip of the guide cannula resides a distance between 3 mm to about 30 mm from a distal tip of the needle. 19. The device of claim 10, wherein the needle has a fused glass silica body with a single continuous lumen with at least a major portion above the needle-connector of residing inside the flexible tubing, wherein the needle comprises a portion with an exposed length of the fused glass silica body that is not encased in the flexible tubing and that extends below the needle connector and has a lesser length than the length in the flexible tubing. 20. The device of claim 10, wherein an outer surface of the tubular guide cannula has a size and geometry adapted for use with a stereotactic frame, and wherein the needle has an inner diameter of between about 100 μm to about 750 μm. 21. The device of claim 10, further comprising a trajectory guide holding the guide cannula, wherein the intrabody length segment is less than the external length segment of the needle, and wherein the needle-cannula connector engages the guide cannula connector a distance above the trajectory guide. 22. A method of transferring a substance to and/or from a patient, the method comprising: providing a guide cannula with an axially extending interior lumen;inserting a stylet with a sharp distal tip into the guide cannula lumen and attaching the stylet to the guide cannula so that the distal tip extends a distance outside the guide cannula distal end;placing the attached guide cannula and stylet into a trajectory guide of a stereotactic frame; thenintroducing the guide cannula and stylet into a subject so that the distal end of the guide cannula resides proximate a target site; thenslidably withdrawing the stylet from the guide cannula and out of the subject, while leaving the guide cannula in position; theninserting a needle having an internal lumen into the guide cannula lumen and attaching a needle connector to the guide cannula, wherein a distal end of the needle can slidably extend out of a distal end of the guide cannula and reside at the target site, wherein an external length segment of the needle extends above the needle connector encased in flexible tubing; thentransferring the substance to or from the target site through the needle lumen. 23. The method of claim 22, wherein the needle is an infusion needle, wherein the transferring the substance to or from the target site is carried out by infusing a substance, and wherein the needle has a length in a range of 4-10 feet and at least a major portion of the external length segment is encased in the flexible tubing while the distal end of the needle is exposed and unencased in the flexible tubing. 24. An MRI compatible infusion needle for transferring a substance to and/or from a patient, the needle comprising: an elongate fused silica needle body attached to a needle-guide cannula connector that is adapted to connect to a guide cannula, the connector residing spaced apart from a distal end of the needle, wherein the needle body has an intrabody length segment and an external length segment, wherein the external length segment is in a range of about 4-10 feet and is encased in flexible tubing, wherein the intrabody length segment extends a distance below the flexible tubing and below the needle-guide cannula connector, and wherein an exterior surface of the distal end of the needle is outside the flexible tubing and has at least first and second co-axially disposed segments having different outer diameters.
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