Patents by Inventor Stephen James Field
Stephen James Field has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20240382231Abstract: A needle assembly has a needle having an echogenic feature proximate to its distal sharp tip mounted to an echogenic cannula, with the echogenic tip of the needle extending beyond the distal end of the cannula. The echogenic tip provides guidance for the movement of the needle assembly under ultrasound observation so that the needle assembly may be more readily maneuvered inside a body. Once correctly positioned, the needle is removed and further confirmation may be made under ultrasound observation that the cannula has been correctly positioned inside the body. The echogenic feature of the needle may be at least one spiral groove that is tilted at an angle relative to the tip of the needle to effect a substantially 180° reflection of the ultrasound. An alternative echogenic feature to improve reflected echogeneity has crisscrossing grooves each having a predetermined pitch density formed at a neutral position on the needle.Type: ApplicationFiled: July 26, 2024Publication date: November 21, 2024Applicant: SMITHS MEDICAL INTERNATIONAL LIMITEDInventors: Andrew Crisman, Stephen James Field, Alysa Lauren Granata, Neil Adma Tookman
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Patent number: 12115311Abstract: A paediatric tracheostomy tube is provided in two parts. One part is a patient end portion (13) having a silicone shaft (10) arranged to locate in the trachea. The machine end is formed with a mounting flange (20) adapted to lie against the neck and has a low profile coupling (21) on its machine side. The other part is a machine end portion (23) having a flexible, corrugated shaft (10?) of polypropylene with a low profile coupling (26) at its patient end adapted to engage the coupling (21) on the flange as a twist fit. The machine end of the machine end portion (23) has a tapered male coupling (25) adapted to fit with a female coupling on a breathing tube, the male coupling having a larger profile than the coupling (26) on the patient end of the machine end portion (23) and the coupling (21) on the flange.Type: GrantFiled: July 9, 2019Date of Patent: October 15, 2024Assignee: Smiths Medical International LimitedInventor: Stephen James Field
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Patent number: 12082842Abstract: A needle assembly has a needle having an echogenic feature proximate to its distal sharp tip mounted to an echogenic cannula, with the echogenic tip of the needle extending beyond the distal end of the cannula. The echogenic tip provides guidance for the movement of the needle assembly under ultrasound observation so that the needle assembly may be more readily maneuvered inside a body. Once correctly positioned, the needle is removed and further confirmation may be made under ultrasound observation that the cannula has been correctly positioned inside the body. The echogenic feature of the needle may be at least one spiral groove that is tilted at an angle relative to the tip of the needle to effect a substantially 180° reflection of the ultrasound. An alternative echogenic feature to improve reflected echogeneity has crisscrossing grooves each having a predetermined pitch density formed at a neutral position on the needle.Type: GrantFiled: October 19, 2016Date of Patent: September 10, 2024Assignee: Smiths Medical International LimitedInventors: Andrew Crisman, Stephen James Field, Alysa Lauren Granata, Neil Adam Tookman
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Publication number: 20240278070Abstract: An oscillatory respiratory therapy device (100) has a rocker aim (105) that opens and closes a valve seat (106) by breathing through the device. The device (100) also includes a gas treatment arrangement including an HME (122) and filter (121) located such that both inhaled and exhaled gas passes through the HME and filter.Type: ApplicationFiled: June 29, 2022Publication date: August 22, 2024Applicant: SMITHS MEDICAL INTERNATIONAL LIMITEDInventors: Ombeline Marone-Hitz, Jamie Daniel Perkins, Steven Mark Tupper, Stephen James Field, Mohammad Qassim Mohammad Khasawneh
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Publication number: 20240269423Abstract: An oscillatory PEP device has four valve openings (201) to (204) mounted on a support (205) beneath a rocker arm (106) supporting a valve closure (107). The support is rotatable to position a selected one of the valve openings beneath the valve closure and in line with a breathing path between an inlet (103). (104) and an outlet (111). The rocker arm (106) supports a soft-iron pin (108) at one end, which interacts with one of two permanent magnets (212) or (213) of different strengths on a turntable (211) to apply a force tending to pull the arm down and close the valve opening. The turntable (211) can be rotated to position the desired magnet (212) or (213) to interact with the soft-iron pin on the rocker arm.Type: ApplicationFiled: July 6, 2022Publication date: August 15, 2024Applicant: SMITHS MEDICAL INTERNATIONAL LIMITEDInventors: Ombeline Marone-Hitz, Jamie Daniel Perkins, Stephen James Field, Steven Mark Tupper, Mohammad Qassim Mohammad Khasawneh
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Publication number: 20230211096Abstract: An oscillatory respiratory therapy device 100 has an opening 8 to atmosphere through which air passes to the user. The device has a visual indicator 20 including a paper indicator 25 and a dye reservoir 29 mounted at the opening. Before use, the opening 8 is covered by a removable cover strip 21 that prevents air flowing through the opening. The cover strip 21 is attached to the dye reservoir 29 so that the reservoir is pulled against the paper indicator 25 when the cover strip is removed, thereby the device to be used. This causes dye to flow gradually from the reservoir 29 and spread outwardly across the paper indicator 25, which is marked to indicate duration of use.Type: ApplicationFiled: June 23, 2021Publication date: July 6, 2023Applicant: SMITHS MEDICAL INTERNATIONAL LIMITEDInventors: Stephen James Field, Steven Mark Tupper, Mohammad Qassim Mohammad Khasawneh, Usamah Hanif
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Publication number: 20210275765Abstract: A paediatric tracheostomy tube is provided in two parts. One part is a patient end portion (13) having a silicone shaft (10) arranged to locate in the trachea. The machine end is formed with a mounting flange (20) adapted to lie against the neck and has a low profile coupling (21) on its machine side. The other part is a machine end portion (23) having a flexible, corrugated shaft (10?) of polypropylene with a low profile coupling (26) at its patient end adapted to engage the coupling (21) on the flange as a twist fit. The machine end of the machine end portion (23) has a tapered male coupling (25) adapted to fit with a female coupling on a breathing tube, the male coupling having a larger profile than the coupling (26) on the patient end of the machine end portion (23) and the coupling (21) on the flange.Type: ApplicationFiled: July 9, 2019Publication date: September 9, 2021Applicant: SMITHS MEDICAL INTERNATIONAL LIMITEDInventor: Stephen James Field
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Patent number: 10894138Abstract: A tracheostomy tube assembly includes an outer tube (1) and an inner cannula (2) removably inserted in the outer tube. The connector (15) on the machine end of the outer tube is rotatable through about a quarter turn and has a screw thread (30) on its inner surface. The hub (33) on the machine end of the inner cannula (2) is also formed with a screw thread (35) arranged to engage with the screw thread (30) in the connector. The inner cannula (2) is pulled into the outer tube (1), or is pushed outwardly of the tube, by rotating the connector.Type: GrantFiled: May 27, 2016Date of Patent: January 19, 2021Assignee: Smiths Medical International LimitedInventors: Timothy Bateman, Stephen James Field, Andrew Thomas Jeffrey, Christopher John Woosnman
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Publication number: 20200297904Abstract: A dual-lumen closed-system suction catheter assembly has a handpiece (2) at its machine end coupled to a suction source (27) and a source (37) of irrigating liquid. The handpiece has a pistol grip shape with a suction control (30) on its upper part (22) that can be operated by the thumb to open a valve (28) in line between the suction lumen (10) of the catheter (1) and the suction source (27). The flow of irrigating liquid to the catheter (1) is controlled by an irrigation valve (38) in the handpiece that is actuated by a trigger (50) when squeezed by the fingers of the same hand.Type: ApplicationFiled: August 30, 2018Publication date: September 24, 2020Applicant: SMITHS MEDICAL INTERNATIONAL LIMITEDInventor: Stephen James Field
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Patent number: 10639002Abstract: An embryo transfer catheter or other medical device has a shaft extruded with two layers. The outer layer is relatively thick and contains gas bubbles sufficient to increase the visibility of the catheter under ultrasound observation but with a density that allows material within the catheter to be viewed by the eye. The inner layer is relatively thin and is free of bubbles so that it provides a smooth bore to the catheter.Type: GrantFiled: June 11, 2013Date of Patent: May 5, 2020Assignee: The Cooper Companies GLobal Holdings LPInventors: Stephen James Field, Richard Hingley, Stephen James Lodge, Thomas Cuthbert Mills
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Patent number: 10617445Abstract: An embryo transfer syringe has a roller coupled with the rear end of its plunger. The roller is displaceable along an elongate housing extending from the rear of the barrel of the syringe. The roller can be manually engaged through a slot along the housing to rotate it and roll it along the housing thereby smoothly and controllably displacing the plunger.Type: GrantFiled: January 24, 2018Date of Patent: April 14, 2020Assignee: The Cooper Companies Global Holdings LPInventor: Stephen James Field
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Publication number: 20200100761Abstract: An embryo replacement catheter has a flexible extruded shaft of a transparent polyurethane with a bore extending along its length. Gas bubbles of a diameter in the range 5? to 10? are incorporated into the thickness of the wall of the shaft by adding gas during extrusion. The bubbles are selected to increase the visibility of the catheter under ultrasound imaging whilst still enabling material flowing along the catheter to be seen.Type: ApplicationFiled: October 15, 2019Publication date: April 2, 2020Inventor: Stephen James Field
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Patent number: 10478150Abstract: An embryo replacement catheter has a flexible extruded shaft of a transparent polyurethane with a bore extending along its length. Gas bubbles of a diameter in the range 5? to 10? are incorporated into the thickness of the wall of the shaft by adding gas during extrusion. The bubbles are selected to increase the visibility of the catheter under ultrasound imaging whilst still enabling material flowing along the catheter to be seen.Type: GrantFiled: July 25, 2017Date of Patent: November 19, 2019Assignee: The Cooper Companies Global Holdings LPInventor: Stephen James Field
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Publication number: 20190009042Abstract: A tracheal tube cuff inflator/indicator has a coloured pressure flag (211) slidable against the action of a spring (212) along the inside of a transparent housing (210) by change of pressure. The flag has three coloured regions along its length. A sleeve (310) with a transparent central window (311) is slidable frictionally along the outside of the housing so that the window can be aligned with a central green region (211G) when correct pressure is achieved in the cuff (10). Any change in pressure of the cuff (10) moves the flag (211) so that the green portion (211G) moves away from the window (311) in the outer sleeve, thereby indicating to the user that the cuff pressure has changed. The inflator/indicator also has an elastomeric balloon (220) acting as a pressure reservoir that can be manually compressed if it is necessary to increase pressure in the cuff.Type: ApplicationFiled: December 20, 2016Publication date: January 10, 2019Applicant: SMITHS MEDICAL INTERNATIONAL LIMITEDInventors: Timothy Bateman, Stephen James Field, Andrew Thomas Jeffrey, Christopher John Woosnam
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Publication number: 20180250868Abstract: The inner cannula (3) of a tracheostomy tube includes a shaft (30) extruded of an ePTFE material. The axial strength of the shaft is increased by heating elongate portions (34 and 35) along the shaft such as by contact with a heated roller (205). The heating is sufficient to alter the structure of the material and make the heated portions (34 and 35) more rigid than the remainder of the shaft.Type: ApplicationFiled: August 26, 2016Publication date: September 6, 2018Applicant: SMITHS MEDICAL INTERNATIONAL LIMITEDInventors: Timothy BATEMAN, Stephen James FIELD
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Publication number: 20180236194Abstract: An inner cannula (200) for a tracheostomy tube (100) has an extruded shaft (20) with a smooth bore. A helical reinforcement element (23) is moulded onto the outside of the shaft the axial strength of which is increased by multiple groups of short bridging elements (24) extending between two adjacent turns of the reinforcement element. The bridging elements (24) are spaced around and along the shaft (20).Type: ApplicationFiled: August 15, 2016Publication date: August 23, 2018Applicant: Smiths Medical International LimitedInventors: Timothy BATEMAN, Stephen James FIELD, Andrew Thomas JEFFREY, Christopher John WOOSNAM
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Patent number: 10045756Abstract: An embryo transfer catheter or other medical device has a shaft extruded with two layers. The outer layer is relatively thick and contains gas bubbles sufficient to increase the visibility of the catheter under ultrasound observation but with a density that allows material within the catheter to be viewed by the eye. The inner layer is relatively thin and is free of bubbles so that it provides a smooth bore to the catheter.Type: GrantFiled: March 19, 2004Date of Patent: August 14, 2018Assignee: The Cooper Companies Global Holdings LPInventors: Stephen James Field, Richard Hingley, Stephen James Lodge, Thomas Cuthbert Mills
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Publication number: 20180169362Abstract: An inner cannula (2) for a tracheostomy tube (1) has a resilient catch (23) at its machine end. The catch has a two angular teeth (27) and (28) projecting outwardly towards its free end. One tooth (27) is shaped and positioned to engage in a groove (40) on the inside of a hub (16) at the machine end of the tube when the inner cannula is fully inserted. The other tooth (28) is smaller and is spaced rearwardly along the catch. The hub (16) also has a shallow rounded bead (44) projecting inwardly and spaced a short distance to the rear of the groove (40). When the inner cannula (2) is pulled out of the tube (1) the smaller tooth (28) engages the bead (44) on the hub (16) causing the catch (23) to deflect inwardly. In this way, the larger tooth (27) is displaced slightly out of the groove (40) making it easier for it to ramp out of the groove and allow the cannula to be withdrawn with little additional pulling force.Type: ApplicationFiled: June 15, 2016Publication date: June 21, 2018Applicant: SMITHS MEDICAL INTERNATIONAL LIMITEDInventors: Timothy Bateman, Stephen James Field, Andrew Thomas Jeffrey, Neil Steven Veasey, Christopher John Woosnam
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Publication number: 20180146985Abstract: An embryo transfer syringe has a roller coupled with the rear end of its plunger. The roller is displaceable along an elongate housing extending from the rear of the barrel of the syringe. The roller can be manually engaged through a slot along the housing to rotate it and roll it along the housing thereby smoothly and controllably displacing the plunger.Type: ApplicationFiled: January 24, 2018Publication date: May 31, 2018Inventor: Stephen James Field
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Publication number: 20180064414Abstract: An embryo replacement catheter has a flexible extruded shaft of a transparent polyurethane with a bore extending along its length. Gas bubbles of a diameter in the range 5? to 10? are incorporated into the thickness of the wall of the shaft by adding gas during extrusion. The bubbles are selected to increase the visibility of the catheter under ultrasound imaging whilst still enabling material flowing along the catheter to be seen.Type: ApplicationFiled: July 25, 2017Publication date: March 8, 2018Inventor: Stephen James Field