Disposable air/water valve for an endoscopic device
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
A61B-001/00
A61B-001/015
F16K-011/07
출원번호
US-0090553
(2013-11-26)
등록번호
US-9161680
(2015-10-20)
발명자
/ 주소
Bellofatto, Steven
Cushner, Jeffrey B.
Joachim, Robert
Salmon, Scott
Wolcott, Kenneth E.
출원인 / 주소
Bracco Diagnostics Inc.
대리인 / 주소
Alston & Bird LLP
인용정보
피인용 횟수 :
0인용 특허 :
139
초록▼
An air/water valve assembly for use in an endoscope or other medical equipment is provided. The valve assembly includes a spool and a one-piece sealing member that includes a number of sealing rings. The spool can be injection molded, and the sealing member can be overmolded onto the spool. A spring
An air/water valve assembly for use in an endoscope or other medical equipment is provided. The valve assembly includes a spool and a one-piece sealing member that includes a number of sealing rings. The spool can be injection molded, and the sealing member can be overmolded onto the spool. A spring, retainer, and housing are also included to form the valve assembly. As such, an air/water valve assembly may be made that can be used in a single medical procedure and then discarded in a cost-effective manner. Corresponding methods of manufacturing an air/water valve assembly are also provided.
대표청구항▼
1. A valve assembly for a medical instrument comprising: a housing;a spool comprising a first end, a second end, a longitudinal passageway extending between the first end and the second end, and first and second portions proximate the first and second ends, respectively, wherein the first portion of
1. A valve assembly for a medical instrument comprising: a housing;a spool comprising a first end, a second end, a longitudinal passageway extending between the first end and the second end, and first and second portions proximate the first and second ends, respectively, wherein the first portion of the spool is configured to be received at least partially within the housing, and wherein an outer surface of the second portion of the spool defines a plurality of positioning features; anda sealing member comprising a longitudinal support member and a plurality of sealing rings extending circumferentially from the support member, wherein each sealing ring is spaced from an adjacent sealing ring a distance along a length of the support member that corresponds to a distance between adjacent positioning features,wherein an inner surface of the support member is configured to engage the outer surface of the spool, andwherein each sealing ring defines an opening such that an inner circumferential surface of each sealing ring is configured to sealingly engage the outer surface of the second portion of the spool proximate a corresponding positioning feature. 2. The valve assembly of claim 1 further comprising: a spring comprising a first end and a second end, wherein the spring is disposed around the first portion of the spool, anda retainer configured to be received by the first end of the spool,wherein the second end of the spring is configured to engage and remain fixed with respect to the housing, and the first end of the spring is configured to engage the retainer, such that the retainer is biased away from the housing. 3. The valve assembly of claim 2, wherein the housing defines at least one radial extension configured to engage the second end of the spring. 4. The valve assembly of claim 1, wherein at least a portion of the outer surface of the spool defines a longitudinal groove configured to receive the support member of the sealing member. 5. The valve assembly of claim 4, wherein an outer surface of the support member forms a flush surface with the outer surface of the spool when the sealing member is engaged with the spool. 6. The valve assembly of claim 4, wherein the sealing member is overmolded onto the spool. 7. The valve assembly of claim 4, wherein the spool defines a transverse passageway that is substantially perpendicular and intersects with the longitudinal passageway, and wherein the transverse passageway is defined through the longitudinal groove. 8. The valve assembly of claim 4, wherein at least one portion of the longitudinal groove is defined by at least one positioning feature. 9. The valve assembly of claim 1, wherein the spool defines a transverse passageway that is substantially perpendicular to and intersects with the longitudinal passageway, and wherein the support member of the sealing member defines a longitudinally extending ring configured to engage an opening of the transverse passageway defined in the outer surface of the spool. 10. The valve assembly of claim 1, wherein the sealing member comprises four sealing rings. 11. The valve assembly of claim 1, wherein the housing defines longitudinal extensions configured to engage the medical instrument within which the valve assembly is mounted. 12. A method of manufacturing a valve assembly for a medical instrument comprising: molding a spool, wherein the spool comprises a first end, a second end, a longitudinal passageway extending between the first end and the second end, and first and second portions proximate the first and second ends, respectively, wherein an outer surface of the second portion of the spool defines a plurality of positioning features;overmolding a sealing member onto an outer surface of the spool, wherein the sealing member comprises a longitudinal support member and a plurality of sealing rings extending circumferentially from the support member, wherein each sealing ring is spaced from an adjacent sealing ring a distance along a length of the support member that corresponds to a distance between adjacent positioning features, wherein an inner surface of the support member engages the outer surface of the spool, and wherein each sealing ring defines an opening such that an inner circumferential surface of each sealing ring sealingly engages the outer surface of the second portion of the spool proximate a corresponding positioning feature;molding a housing configured to at least partially receive the first portion of the spool; anddisposing the first portion of the spool at least partially within the housing. 13. The method of claim 12 further comprising: disposing a spring around the first portion of the spool, wherein the spring defines a first end and a second end;providing a retainer configured to be received by the first end of the spool;engaging the second end of the spring to the housing such that a position of the second end of the spring remains fixed with respect to the housing;engaging the first end of the spring with the retainer; andattaching the retainer to the first end of the spool, such that the retainer is biased away from the housing. 14. The method of claim 12 further comprising defining a longitudinal groove in at least a portion of the outer surface of the spool, wherein the longitudinal groove is configured to receive the support member of the sealing member. 15. The method of claim 14, wherein molding the spool comprises using a first mold to form the spool, and wherein overmolding the sealing member comprises removing the spool from the first mold and placing the spool in a second mold. 16. The method of claim 15, wherein overmolding the sealing member comprises directing an elastomeric material into the longitudinal groove to form the sealing member in the second mold. 17. The method of claim 15 further comprising arranging a plurality of stationary plates in an orientation that is perpendicular to a longitudinal axis of the spool, wherein the plates comprise concentric holes and are positioned at locations corresponding to locations of the sealing rings to be formed. 18. The method of claim 14, wherein molding the spool comprises defining a transverse passageway that is substantially perpendicular to and intersects with the longitudinal passageway, and wherein the transverse passageway is defined through the longitudinal groove. 19. The method of claim 14, wherein at least one portion of the longitudinal groove is defined by at least one positioning feature. 20. The method of claim 12, wherein molding the spool comprises defining a transverse passageway that is substantially perpendicular and intersects with the longitudinal passageway, and wherein overmolding the sealing member comprises defining a longitudinally extending ring in the support member that engages an opening of the transverse passageway defined in the outer surface of the spool.
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