Patents Assigned to Smiths Medical International Limited
  • Patent number: 10773041
    Abstract: A tracheostomy tube (1) has an adjustable flange (2) that can be slid along the tube and locked in the desired position. The flange has a one-piece resilient nut (40) that is threaded on a tubular projection (30) on the flange. The nut has an integral inner sleeve (44) divided into separate fingers (48) the outside of which are engaged by the inside of the tubular projection. The flange is locked in position by screwing the nut onto the projection so that the fingers that are forced inwardly to engage the outside of the tube.
    Type: Grant
    Filed: January 18, 2017
    Date of Patent: September 15, 2020
    Assignee: Smiths Medical International Limited
    Inventors: Andrew Thomas Jeffrey, Christopher John Woosnam
  • Patent number: 10625038
    Abstract: Apparatus for enabling speech while a tracheostomy tube is in place includes a tracheostomy tube 1 with a vocalisation gas lumen 15 extending along its length and opening at one end externally of the tube above the sealing cuff 10 in the trachea T. A ventilator 2 is connected to the main bore 3 of the tube 1 to supply ventilation gas cyclically to the patient. The ventilator 2 also has an auxiliary outlet 29 connected to the vocalisation gas lumen 15. The auxiliary outlet 29 supplies vocalisation gas to the vocalisation gas lumen 15 only during the expiratory phases of ventilation. Alternatively, the apparatus includes a separate supply 50 of vocalisation gas connected with the vocalisation gas lumen 15? via a valve 52. The valve 52 is controlled by pressure in the main gas supply tubing 31? so that the valve is opened to enable the supply of vocalisation gas only during the expiratory phases of ventilation.
    Type: Grant
    Filed: November 29, 2013
    Date of Patent: April 21, 2020
    Assignee: Smiths Medical International Limited
    Inventor: Peter Ryan Smith
  • Patent number: 10603454
    Abstract: A tracheostomy tube assembly comprises an outer tracheostomy tube (1) and an inner cannula (20) fitted in the tube. The machine end of the inner cannula has a collapsible region (22) formed by a plurality of curved or bent struts (26) extending parallel with one another between a machine end collar (28) and a patient end collar (27). The struts (26) carry outwardly-projecting catches (23) arranged to engage a rib (24) extending around the inside of a hub (16) at the machine end of the tube and thereby resist removal of the cannula from the tube. The inner cannula (20) is removed by twisting the machine end collar (28) so that the struts (26) collapse inwardly and thereby disengage the catches (23) from the rib (24).
    Type: Grant
    Filed: April 2, 2016
    Date of Patent: March 31, 2020
    Assignee: SMITHS MEDICAL INTERNATIONAL LIMITED
    Inventors: Timothy Bateman, Steven James Field, Andrew Thomas Jeffrey, Neil Steven Veasey, Christopher John Woosnam
  • Patent number: 10603455
    Abstract: A tracheostomy tube (1) has a movable and lockable flange (2) by which the tube can be supported about the neck of a patient. The flange has a rotatable locking ring (34), which is threaded with a housing (26) fixed with the wings (22 and 23) of the flange. A resilient sleeve (50) is located in a recess (44) of the locking ring between a compression surface (45) on the locking ring at one end and the floor (46) of the housing at the opposite end. When the locking ring (34) is twisted it is moved forwardly along the housing (26), thereby compressing the resilient sleeve (50) axially. The axial compression causes the sleeve (50) to expand radially against the outside of the tube (1) and the inside of the housing (26), thereby locking the flange (2) in position.
    Type: Grant
    Filed: December 15, 2015
    Date of Patent: March 31, 2020
    Assignee: SMITHS MEDICAL INTERNATIONAL LIMITED
    Inventors: Andrew Thomas Jeffrey, Christopher John Woosnam
  • Publication number: 20190275282
    Abstract: An HME has a housing (10) moulded in two parts (26 and 27) of a thick, thermally-insulative foamed plastics to form an enlarged central region (13) and opposite end walls (24 and 25). Separate patient and machine end couplings (11 and 12) are bonded to openings (37 and 47) in the end walls. The two housing parts (26 and 27) are bonded end to end about an HME element (14) formed by a strip of treated corrugated paper wound about a support sleeve (50).
    Type: Application
    Filed: May 15, 2017
    Publication date: September 12, 2019
    Applicant: SMITHS MEDICAL INTERNATIONAL LIMITED
    Inventor: Martin Chandler
  • Patent number: 10363381
    Abstract: Apparatus for warming medical infusion fluids includes a heat pipe (12) warmed by an electrical heater (17) at one end. A replaceable fluid flow path (20) of helical configuration extends along the heat pipe (12) and is formed between an inner, thermally-conductive sleeve (21) with a helical profile and an outer insulative sleeve (26). An inlet (3) to the flow path (20) is located adjacent the heater (17), the outlet (4) being at the opposite end of the heat pipe (12). The inlet (3) is connected to a suspended saline bag (1) and the outlet (4) connects via tubing (5) to a catheter (6) inserted in a blood vessel. A temperature sensor (18) in the outlet tubing (5) provides a feedback output to a control unit (11) that controls operation of the heater (17) to maintain a stable temperature.
    Type: Grant
    Filed: December 13, 2013
    Date of Patent: July 30, 2019
    Assignee: Smiths Medical International Limited
    Inventor: Fredrick M Richards
  • Publication number: 20190151588
    Abstract: A tracheostomy tube (1has an adjustable flange (2) that can be slid along the tube and locked in the desired position. The flange has a one-piece resilient nut (40) that is threaded on a tubular projection (30) on the flange. The nut has an integral inner sleeve (44) divided into separate fingers (48) the outside of which are engaged by the inside of the tubular projection. The flange is locked in position by screwing the nut onto the projection so that the fingers that are forced inwardly to engage the outside of the tube.
    Type: Application
    Filed: January 18, 2017
    Publication date: May 23, 2019
    Applicant: SMITHS MEDICAL INTERNATIONAL LIMITED
    Inventors: Andrew Thomas Jeffrey, Christopher John Woosnam
  • Publication number: 20190094206
    Abstract: A respiratory monitor including a sensor (200) responsive to substance in exhaled breath is mounted in or connected to a respiratory therapy device (100) of the kind that provides an alternating resistance to expiratory flow. The sensor (200) is exposed to biomarkers or other substances in exhaled breath. The vibration in the lungs produced by the therapy device (100) helps release an increased amount of the biomarkers or other substances in the exhaled breath.
    Type: Application
    Filed: March 17, 2017
    Publication date: March 28, 2019
    Applicant: SMITHS MEDICAL INTERNATIONAL LIMITED
    Inventors: Michael L. Blomquist, Paul James Leslie Bennett, Anthony Lucio Belisario
  • Publication number: 20190060593
    Abstract: A tracheostomy tube assembly includes an outer tracheostomy tube (1) and a removable inner cannula (3). The inner cannula (3) is made by helically winding PTFE tape (40) on a mandrel (42) and applying a reinforcing strip (34) of PTFE or other materials longitudinally along the outside of the wound tape. The tape and strip are then heated to sinter and bond them together and convert the PTFE to ePTFE and form an inner layer. An outer layer (46) is extruded along the outside of the inner layer. The shaft (30) is cut between the ends of adjacent reinforcing strips (34) to leave a short unreinforced portion (35) at the patient end (32) of each shaft.
    Type: Application
    Filed: September 28, 2016
    Publication date: February 28, 2019
    Applicant: SMITHS MEDICAL INTERNATIONAL LIMITED
    Inventor: Eric Pagan
  • Publication number: 20190009042
    Abstract: 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: Application
    Filed: December 20, 2016
    Publication date: January 10, 2019
    Applicant: SMITHS MEDICAL INTERNATIONAL LIMITED
    Inventors: Timothy Bateman, Stephen James Field, Andrew Thomas Jeffrey, Christopher John Woosnam
  • Publication number: 20190009041
    Abstract: An inflation valve (20) for a sealing cuff (10) on a tracheal tube (1) has a helical ceramic spring (40) that urges a valve seal (45, 87) against a valve seat (28, 128). The actuator (51) by which the seal (45, 87) is lifted from the seat to open the valve includes a spring latch mechanism (53). The latch mechanism has three spring fingers (56) that are held resiliently in compression in a recess (60) before the first actuation of the valve. When first used, the actuator is moved forwardly to open the valve so that the free ends of the spring fingers clear the end of the recess and deflect outwardly. When the actuator (51) is released to allow the valve to close, the spring fingers (56) engage a latch surface (63) so that the spring (40) is held in greater tension.
    Type: Application
    Filed: August 12, 2016
    Publication date: January 10, 2019
    Applicant: SMITHS MEDICAL INTERNATIONAL LIMITED
    Inventors: Rabeya Khanom, Christopher John Woosnam, Mansour Youseffi
  • Patent number: 10137267
    Abstract: A fenestrated tracheostomy tube has a shaft (1) made of a silicone or other soft material. The fenestrated region (10) located in the trachea (20) has two rows of several openings (11) along the center line of the tube. The openings (12) are formed in a separate plate (12) of a stiffer material bonded or moulded in an aperture (13) in the shaft (1) of the tube to give the shaft extra stiffness in this region.
    Type: Grant
    Filed: January 4, 2013
    Date of Patent: November 27, 2018
    Assignee: SMITHS MEDICAL INTERNATIONAL LIMITED
    Inventor: Daniel Jay Coates
  • Publication number: 20180250868
    Abstract: 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: Application
    Filed: August 26, 2016
    Publication date: September 6, 2018
    Applicant: SMITHS MEDICAL INTERNATIONAL LIMITED
    Inventors: Timothy BATEMAN, Stephen James FIELD
  • Publication number: 20180236194
    Abstract: 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: Application
    Filed: August 15, 2016
    Publication date: August 23, 2018
    Applicant: Smiths Medical International Limited
    Inventors: Timothy BATEMAN, Stephen James FIELD, Andrew Thomas JEFFREY, Christopher John WOOSNAM
  • Publication number: 20180228992
    Abstract: An introducer (2) for a curved tracheostomy tube (1) has a patient end tip (33) that projects beyond the patient end of the tube to help insertion. The patient end tip (33) is divided into two hinged portions (36) and (37). The hinged portions (36) and (37) bend outwardly to fill the gap created when the tube 1 is deformed to an oval section caused by straightening it by loading on the introducer.
    Type: Application
    Filed: June 17, 2016
    Publication date: August 16, 2018
    Applicant: SMITHS MEDICAL INTERNATIONAL LIMITED
    Inventors: Simon Neame, Eric Pagan
  • Publication number: 20180169362
    Abstract: 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: Application
    Filed: June 15, 2016
    Publication date: June 21, 2018
    Applicant: SMITHS MEDICAL INTERNATIONAL LIMITED
    Inventors: Timothy Bateman, Stephen James Field, Andrew Thomas Jeffrey, Neil Steven Veasey, Christopher John Woosnam
  • Publication number: 20180169364
    Abstract: A tracheostomy tube introducer (1) has a patient end region (10) on which the tube (2) is mounted and that is curved in one sense. The introducer has a machine end region (11) projecting from the rear end of the tube (2) to provide a handle that curves in the opposite sense to the patient end region (10) so that the introducer has an S shape along its length. A bore (24) for a guide member extends from the patient end tip (14) of the introducer and opens in the machine end region (11) through a side opening (25). The introducer 1 is provided in a kit (200) with the tracheostomy tube (2) and a dilator (202) having the same general S shape as the introducer.
    Type: Application
    Filed: May 31, 2016
    Publication date: June 21, 2018
    Applicant: SMITHS MEDICAL INTERNATIONAL LIMITED
    Inventors: Andrew Thomas Jeffrey, Christopher John Woosnam
  • Publication number: 20180133425
    Abstract: 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: Application
    Filed: May 27, 2016
    Publication date: May 17, 2018
    Applicant: SMITHS MEDICAL INTERNATIONAL LIMITED
    Inventors: Timothy Bateman, Steven James Field, Andrew Thomas Jeffrey, Christopher John Woosnman
  • Publication number: 20180133423
    Abstract: A tracheostomy tube assembly includes an outer tube (1) and an inner cannula (2) inserted in the outer tube. Two lugs (36) and (37) project outwardly from the inner cannula. The outer tube has a connector (15) that is rotatable and has catch members (28) and (29) that can be rotated into alignment with the lugs (36) and (37) on the inner cannula so as to retain the inner cannula in the outer tube. The inner cannula is removed by twisting the connector (15) through 90° so that the catch members (28) (and 29) move out of alignment with the lugs (36) and (37) to enable the inner cannula to be pulled rearwardly out of the outer tube.
    Type: Application
    Filed: May 27, 2016
    Publication date: May 17, 2018
    Applicant: SMITHS MEDICAL INTERNATIONAL LIMITED
    Inventors: Timothy Bateman, Andrew Thomas Jeffrey, Christopher John Woosnman
  • Publication number: 20180110954
    Abstract: Ventilator apparatus includes a pump (41) connected to supply pressurised air both to an air reservoir (23) and to an oxygen concentrator (70) that supplies pressurised oxygen to an oxygen reservoir (24). The outlet (50) of the air reservoir (23) is connected to the inlet of a breathing circuit (30) via an entrainment device (56) so that pressurised air from the reservoir entrains atmospheric air. The outlet (84) of the oxygen reservoir (24) is connected via oxygen tubing (99) to the patient end of the breathing circuit (30). A patient valve (90) at the patient end (93) of the breathing circuit (30) opens to allow the patient to exhale via openings (97) in the valve. The oxygen supply is switched to supply oxygen to the breathing circuit (30) during the expiratory phase so that oxygen in the circuit is inhaled during a subsequent inhalation phase.
    Type: Application
    Filed: April 14, 2016
    Publication date: April 26, 2018
    Applicant: SMITHS MEDICAL INTERNATIONAL LIMITED
    Inventors: Anthony Lucio Belisario, Paul James Leslie Bennett, Robert James Burchell, Mohammad Qassim Mohammad Khasawneh, Mark Charles Oliver