WO2014158616A1 - Canule de drainage ayant une languette d'ancrage - Google Patents

Canule de drainage ayant une languette d'ancrage Download PDF

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Publication number
WO2014158616A1
WO2014158616A1 PCT/US2014/018758 US2014018758W WO2014158616A1 WO 2014158616 A1 WO2014158616 A1 WO 2014158616A1 US 2014018758 W US2014018758 W US 2014018758W WO 2014158616 A1 WO2014158616 A1 WO 2014158616A1
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WO
WIPO (PCT)
Prior art keywords
tube
cannula
securing
patient
proximal portion
Prior art date
Application number
PCT/US2014/018758
Other languages
English (en)
Inventor
H. George BRENNAN
Original Assignee
Brennan H George
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from US13/828,442 external-priority patent/US9480827B2/en
Priority claimed from US13/892,131 external-priority patent/US20140088568A1/en
Application filed by Brennan H George filed Critical Brennan H George
Priority to EP14773296.0A priority Critical patent/EP2968845A4/fr
Publication of WO2014158616A1 publication Critical patent/WO2014158616A1/fr

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00—Catheters; Hollow probes
    • A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
    • A61M25/02—Holding devices, e.g. on the body
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
    • A61M1/84—Drainage tubes; Aspiration tips
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M27/00—Drainage appliance for wounds or the like, i.e. wound drains, implanted drains
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
    • A61M39/22—Valves or arrangement of valves
    • A61M39/28—Clamping means for squeezing flexible tubes, e.g. roller clamps
    • A61M39/286—Wedge clamps, e.g. roller clamps with inclined guides
    • A61M39/287—Wedge formed by a slot having varying width, e.g. slide clamps
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00—Catheters; Hollow probes
    • A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
    • A61M25/02—Holding devices, e.g. on the body
    • A61M2025/0286—Holding devices, e.g. on the body anchored in the skin by suture or other skin penetrating devices

Definitions

  • the various embodiments disclosed herein relate to a drainage cannula with an anchor tab and a pinch mechanism or valve in use with the cannula.
  • a dead space within the patient's body is typically created. Bodily fluid is aggregated within this dead space and must be drained to prevent infections and collection of bodily fluids which will require evacuation.
  • a drainage cannula is inserted into a patient's body to drain the bodily fluid from the patient. A portion of the cannula is disposed inside the patient's body under the skin while another portion of the cannula is disposed outside the patient's body. Bodily fluid created within the patient's body flows out of the cannula into a reservoir for disposal at a later time.
  • the cannula is capable of shifting and the apertures formed on the cannula disposed within the body can be exposed to the environment.
  • bodily fluid will leak out of those apertures exposed to the environment and create sanitary issues.
  • the portion of the cannula that was previously disposed within the body and is now exposed to the environment is now contaminated.
  • Another problem of the prior art drainage cannula is that one of the apertures formed on the proximal side may become exposed to the atmosphere. In this case, the closed vacuum suction being used to draw bodily fluid from the patient to a reservoir would lose suction and prevent the withdrawal of bodily fluid from the patient.
  • the cannula cannot be merely reinserted or pushed into the patient's body due to contamination of the exposed portion of the drainage cannula. Instead, the exposed aperture may be covered with tape to reestablish the vacuum in the drainage cannula. If the drainage cannula shifts a significant distance so that a significant number of apertures are now exposed to the environment or the apertures are no longer properly positioned within the patient's body, the doctor must reestablish the drain. To do so, the patient must be anesthetized, opened up and the drainage cannula repositioned.
  • the drainage cannula with anchor tab disclosed herein addresses the needs discussed above, discussed below and those that are known in the art.
  • the drainage cannula disclosed herein has one of three different types of anchor tabs.
  • the first type of anchor tab is a punctureable anchor tab that is secured to a proximal portion which remains exposed to the environment while the distal portion of the drainage cannula remains inserted inside of the patient's body.
  • the punctureable tab is punctured with a needle and thread to suture the puncturable tab to the patient's body after positioning the drainage cannula in the patient's body.
  • the second type of anchor tab is a tab having a preformed hole formed there through. In this manner, the needle does not need to puncture through the tab. Rather, the needle is inserted through the through hole of the tab and sutured to the patient's body.
  • the third type of anchor tab includes first and second parts that form a fastening system.
  • the first and second parts are removably attachable to each other.
  • the first part is attached to the proximal portion of the cannula.
  • the second part is attached to the patient's body. After inserting the cannula into the patient's body and positioning the apertures formed on the distal portion of the cannula at the proper position where the bodily fluid is being generated, the first and second parts are attached to each other to prevent movement of the cannula while draining bodily fluid.
  • the cannula may comprise an elongate hollow tube and a means for securing a proximal portion of the tube to a body of a patient.
  • the elongate hollow tube may have a distal portion and a proximal portion.
  • the distal portion may have an aperture for aspirating bodily fluid and a proximal portion disposed outside of a body during use.
  • the means for securing the proximal portion to the body may be attached to the proximal portion.
  • the means for securing may be a puncturable tab extending out of the proximal portion.
  • the puncturable tab may be flexible or rigid.
  • the means for securing may be a tab extending out of the proximal portion. This tab may have a hole therethrough. This tab may be flexible or rigid.
  • the means for securing may have first and second parts which are removable securable to each other. The first and second parts of the means for securing may be hooks and loops.
  • the distal portion of the cannula may have a plurality of apertures.
  • a method of draining bodily fluid from a body in a secure manner comprising the steps of inserting a distal portion of a drainage cannula into an opening in the body with an aperture formed in the distal portion disposed within the body; closing the opening in the body; and step for securing a proximal portion of the drainage cannula to the body.
  • the closing step may include the step of suturing the opening in the body to close the opening in the body.
  • the step for securing may include the step of puncturing a tab extending from the proximal portion of the cannula with a thread and suturing the tab to the body.
  • the step of securing may include the step of threading a suture through a hole in a tab extending from the proximal portion of the cannula with a thread and suturing the tab to the body.
  • the step of securing may include the step of securing a first part of a two part removably attachable mechanism to the body and securing the first part to a second part of the two part removably attachable mechanism which is attached to the proximal portion.
  • a drainage cannula for draining bodily fluid from a patient.
  • the cannula may comprise an elongate flexible tube and a pinching mechanism.
  • the elongate flexible tube may have a lumen for flowing fluid from a body of the patient to a reservoir system.
  • the tube may define a wall thickness.
  • the tube may have a plurality of holes at a distal portion which is disposed under the skin of the patient during use and a proximal portion is connectable to a suction and reservoir system.
  • the pinching mechanism may be disposed about the tube.
  • the pinching mechanism may have a closed loop defining an enlarged section and a narrow section.
  • the enlarged section may define an interior cavity sufficient to allow fluid to flow through the lumen of the tube when the tube is disposed within the enlarged section.
  • the narrow section may define a gap which is equal to or less than twice the wall thickness of the tube to occlude the tube to stop flow of fluid through the lumen of the tube when the tube is disposed within the narrow section.
  • the cannula may further comprise a tether attached to the pinching mechanism and an exterior surface of the tube for retaining the pinching mechanism.
  • the narrow section may have opposed parallel flat surfaces.
  • the flat surfaces may each have a length about 1 ⁇ 2 a circumference of the tube.
  • the cannula may further comprise a means for securing the proximal portion of the tube to the body of the patient.
  • the means for securing may be an anchor tab attached to the proximal portion of the tube and securable to the body of the patient.
  • the means for securing may be removably attachable to the proximal portion of the tube.
  • a drainage cannula for draining bodily fluid from a patient.
  • the cannula may comprise an elongate flexible tube and a pinching mechanism.
  • the elongate flexible tube may have a lumen for flowing fluid from a body of the patient to a reservoir system.
  • the tube may define a wall thickness.
  • the tube may have a plurality of holes at a distal portion which is disposed under the skin of the patient during use and a proximal portion which is connectable to a suction and reservoir system.
  • the pinching mechanism may be disposed about the tube to occlude the tube.
  • the pinching mechanism having a horseshoe configuration defining an opening and an inner cavity. The opening may be sufficiently large to allow the tube to be pushed into the inner cavity.
  • the inner cavity may be sufficiently small to occlude the lumen of the tube to stop flow of fluid through the lumen of the tube when the tube is disposed within the inner cavity.
  • the cannula may further comprise a tether attached to the pinching mechanism and an exterior surface of the tube for retaining the pinching mechanism.
  • a width of the inner cavity may be greater than or equal to a width of the opening.
  • Distal tips of the pinching mechanism may be flared outward to assist in insertion of the tube through the opening and into the inner cavity.
  • the cannula may further comprise a means for securing the proximal portion of the tube to the body of the patient.
  • the means for securing may be an anchor tab attached to the proximal portion of the tube and securable to the body of the patient.
  • the means for securing may be removably attachable to the proximal portion of the tube.
  • Figure 1 is a perspective view of a drainage cannula illustrating a first embodiment of an anchor tab
  • Figure 2 is a flow chart of utilizing the drainage cannula with anchor tab
  • Figure 3 is a perspective view of the drainage cannula illustrating a second embodiment of the anchor tab
  • Figure 4 is a perspective view of the drainage cannula illustrating a third embodiment of the anchor tab
  • Figure 5A is a perspective view of the first embodiment of the anchor tab fabricated as a separate retrofit anchor tab
  • Figure 5B is a perspective view of the second embodiment of the ancho tab fabricated as a separate retrofit anchor tab
  • Figure 5C is a perspective view of the third embodiment of the anchor tab fabricated as a separate retrofit anchor tab
  • FIG. 6 illustrates an internal valve
  • Figure 7 illustrates a first embodiment of a pinching mechanism incorporated into a tube having an anchor tab
  • Figure 8 is a cross sectional view of the tube shown in Figure 7 ;
  • Figure 8A is a cross section view of the tube and pinching mechanism of Figure 8 in a different position;
  • Figure 9 is a cross sectional view of the tube illustrating a tether
  • Figure 10 illustrates a second embodiment of the pinching mechanism incorporated into the tube having the anchor tab
  • Figure 11 is a cross sectional view of the tube shown in Figure 10;
  • Figure 11A is a cross sectional view of the tube and pinching mechanism shown in Figure 10 in a different position
  • Figure 12 illustrates the first embodiment of the pinching mechanism with a tube having a different anchor tab
  • Figure 13 illustrates the first embodiment of the pinching mechanism with a tube having still another embodiment of the anchor tab
  • Figure 14 illustrates the second embodiment of the pinching mechanism with a tube having a different anchor tab
  • Figure 15 illustrates the second embodiment of the pinching mechanism with a tube having still another embodiment of the anchor tab.
  • a drainage cannula 10 with anchor tabs 12, 14, 16 is shown.
  • the anchor tabs 12, 14, 16 are easily securable to the patient to prevent the drainage cannula 10 from shifting after placement in the body 18 of the patient. In this manner, the drainage cannula 10 will not inadvertently shift or dislodge from the patient's body upon movement of the patient. As a result, there is no opportunity for the apertures 20 formed on the distal portion 24 of the cannula 10 to slip out and become exposed to the ambient air environment thereby causing a leak of bodily fluid.
  • the benefit of such configuration provides more mobility to the patient and facilitates more efficient and sanitary drainage of bodily fluid from the patient. Additionally, a pinch valve or pinching mechanism is disclosed herein to aid in use of the cannula 10.
  • the drainage cannula 10 is shown positioned within the patient's body for draining bodily fluid.
  • the patient's body 18 has an opening 20.
  • the drainage cannula 10 is inserted through the opening 20 and positioned within the patient's body 18 so that all of the apertures 22 formed on the distal portion 24 are disposed within the patient's body 18.
  • a proximal portion 26 of the cannula 10 is exposed to the environment and protrudes out of the opening 20.
  • the proximal portion 26 of the cannula 10 incorporates an anchor tab 12.
  • This anchor tab 12 is securable to the patient with a suture.
  • the anchor tab 12 may be fabricated from a material that can be punctured with a needle.
  • the anchor tab 12 may be fabricated from a plastic material, metallic material and other materials known in the art and developed in the future.
  • a medical professional will insert the cannula 10 shown in Figure 1 into the opening 20 of the patient's body.
  • the cannula 10 is inserted 100 (see Figure 2) until all the apertures 20 of the distal portion 24 of the cannula 10 are disposed within the patient's body.
  • the apertures 20 are positioned so as to be effective at draining bodily fluid from a local area of the patient's body that needs to be drained.
  • the body opening 20 is closed 102 by methods known in the art or developed in the future.
  • the body opening 20 may be closed with a medical grade sealant or suturing.
  • a step for securing the cannula 10 to the patient's body to prevent movement of the cannula 10 while draining bodily fluid from the patient's body 18 is performed.
  • the step for securing the cannula 10 as shown in Figure 1 includes the step of suturing the anchor tab 12 to the skin of the patient.
  • the anchor tab 12 being fabricated from a punctureable material is punctured with a needle having a thread.
  • the medical professional sutures the tab 12 to the skin of the patient which limits movement of the cannula 10 so that the apertures 22 formed on the distal portion 24 of the cannula 10 are not exposed to the environment.
  • a cannula 10 with a different type of tab 14 is shown.
  • the tab 14 is attached to the proximal portion 26 of the cannula 10.
  • the tab 14 may be identical to tab 12 discussed in relation to Figure 1 except that the tab 14 has an aperture 42 so that the medical professional does not need to pierce the tab 14 with a needle to suture the tab 14 to the patient's body.
  • the step for securing the cannula includes the step of threading a needle and thread into the aperture 42 and suturing the tab 14 to the patient's body.
  • the tab 16 extends from the proximal portion 26 of the cannula 10.
  • the tab 16 is part of a two-part fastening system, namely, a hooks and loops fastening system.
  • One or both sides of the tab 16 has the first part 34 of the hooks and loops fastening system.
  • a patch 42 has the second part 36 of the hooks and loops fastening system.
  • the patch 42 may be secured to the patient's body adjacent to the opening 20. Patch 42 may be secured to the patient's body by way of adhesive or suturing or other methods known in the art or developed in the future.
  • the step for securing the cannula includes the step of securing the patch 42 to the patient's body and securing the first and second parts of the hooks and loops fastening system to each other.
  • tab 16 has been described in relation to a hooks and loops fastening system, it is contemplated that the tab 16 may be incorporated into a two (2) part fastening system such as snaps or other two (2) part fastening systems known in the art or developed in the future.
  • step for securing 104 may be performed before the step of closing the body opening 102.
  • each of the embodiments of the cannula 10 shown in Figures 1, 3 and 4 is shown as being straight. However, it is also contemplated that the cannula 10 may be bent so that the distal portion 24 may be positioned deep beneath the skin of the patient's body 18 while the proximal portion 26 lays generally flat upon the skin of the patient's body 18.
  • the bend formed in the cannula 10 may occur at the transition region 28 between the distal portion 24 and the proximal portion 26 of the cannula 10. Additionally or alternatively, the bend formed in the cannula 10 may occur at a portion of the length of the cannula 10.
  • the distal portion 24 and/or the proximal portion 26 may be curved.
  • the cannula 10 shown in Figures 1, 3 and 4 may be fabricated from a metallic material and be substantially rigid. However, it is also contemplated that the cannula 10 may be fabricated from a generally flexible material such as plastic.
  • the tabs 12, 14 and 16 may be attached to the proximal portion 26 of the cannula 10 by one or more methods.
  • the tabs 12, 14, 16 may be fabricated as a separate component from the cannula 10, as shown in Figures 5 A - 5C.
  • the tabs 12 and 14 may have a film 28 with a pressure sensitive adhesive 30 disposed underneath the film 28.
  • the film 28 is adhered to the proximal portion 20 of the cannula 10. Thereafter, the tabs 12 and 14 may be secured to the patient as discussed above.
  • the tabs 12 and 14 may be fabricated so as to be integral with the cannula 10.
  • the tabs 12 and 14 if fabricated from a plastic material may be formed during an injection molding process used to form the cannula 10. In this manner, no after work is required to attach the tabs 12, 14 to the cannula. The same may be true if the cannula 10 is fabricated from a metallic material.
  • the tabs 12, 14 may be formed by the same process as the cannula 10 during manufacture of the cannula 10.
  • the tab 16 shown in Figure 5C illustrates a first and second part 34, 36 of a hooks and loops fastening system.
  • the first and second parts 34, 36 may be hooks and loops, respectively or vice versa loops and hooks, respectively.
  • the second part 36 is hooks.
  • the distal portion 38 of the first part 34 of the hook and loop system may have a pressure sensitive adhesive 40 which is used to secure the first part 34 to the proximal portion 26 of the cannula 10.
  • the second part 36 may be secured to the cannula 10 shown in Figures 1, 3 and 4 and have a plurality of apertures 22 formed on the distal portion 24 of the cannula 10.
  • the cannula 10 may have a limited number of apertures 22 and may even have a single aperture at the distal end 30 of the cannula 10. These apertures 22 are positioned at the locations within the patient's body where bodily fluid is being produced and must be drained.
  • the cannula 10 may be fluidically attached to a suction and reservoir system 44.
  • the proximal portion 26 of the cannula 10 has an opening which is connected to a tube.
  • the tube is connected to a vacuum pump (e.g., mechanical pump or bulb system) which creates a vacuum to draw bodily fluid from the patient' s body to a reservoir.
  • a vacuum pump e.g., mechanical pump or bulb system
  • the suction and reservoir system 44 may be a suction bulb.
  • the suction bulb creates suction within the drainage cannula 10 to withdraw bodily fluid from the patient's body due to the resiliency of the suction bulb.
  • the suction bulb is initially depressed and a tube from the drainage cannula 10 is connected to the suction bulb.
  • the resiliency of the material from which the suction bulb is made expands the suction bulb to create a vacuum which draws the bodily fluid from the patient's body into the suction bulb.
  • the suction bulb will have expanded and provide minimal suction and be incapable of withdrawing bodily fluid from the patient's body.
  • the suction bulb acts as a reservoir and may be full of bodily fluid.
  • a pinch mechanism 48 may be incorporated into the tube 50.
  • the pinch valve may have an internal mechanism by which flow of bodily fluid within the tube 50 may be shut or open.
  • the tube 50 may have an internal valve 52 defined by first and second flats 54, 56.
  • the pinch valve 48 may incorporate a mechanical system by which opposed forces 58 deform the tube 50.
  • the pinch valve 48 may also be an external mechanical system by which fluid flowing through the tube 50 is stopped.
  • the pinch valve 48 may be a cam action lever having a stopped position and an open position wherein fluid flowing through the tube 50 is stopped when the cam action lever is in the stopped position and fluid flowing through the tube 50 is allowed to continue when the cam action lever is in the open position.
  • the system and method described herein in relation to the drainage cannula 10 with anchor tabs 12, 14, 16 benefits the doctor in that the doctor does not have to open up the patient and reestablish the drainage cannula. Additionally, it is easier for the caregiver to address the patient's needs in changing out the suction bulb and provide for a more sanitary condition. Additionally, the patient benefits because the patient does not need to go through another procedure and can live under sanitary conditions. Moreover, the patient's ability to heal is further facilitated by use of the drainage cannula 10 with anchor tabs 12, 14, 16 disclosed herein.
  • pinch mechanism 58 may have two different positions as shown in Figures 8, 8 A. These two positions reflect the occluded position shown in Figure 8 A and the opened position shown in Figure 8.
  • the pinch mechanism 58 is in the position shown in Figure 8A, the lumen 60 of the tube 50 is occluded so that fluid does not flow through the tube 50.
  • the lumen 60 of the tube 50 is open so that fluid is allowed to flow through the tube 50.
  • the pinch mechanism 58 may have an enlarged section 62 and a narrow section 64.
  • the enlarged section 62 may have a bulbous inner configuration and be sufficiently large to allow the tube 50 to fully expand as shown in Figure 8 when the tube 50 is disposed in the enlarged section 62.
  • the enlarged section 62 may define an inner diameter 66 that is equal to or greater than an outer diameter 68 of the tube 50 so that the enlarged section 62 does not clamp down on the tube 50 and reduce the flow of fluid through the tube 50 when the tube 50 is disposed in the enlarged section 62.
  • the tube 50 may be traversed between the enlarged section and the narrow section 64.
  • the narrow section 64 may have opposed parallel inner surfaces 70.
  • the opposed parallel flat inner surfaces 70 may be positioned so that a midpoint 74 of the tube 50 when occluded as shown in Figure 8A is aligned to the flat opposed parallel inner surfaces 70.
  • the length 76 of the surface 70 is about one half the length 78 of the tube 50 when occluded, as shown in Figure 8A. The purpose is to prevent the tube 50 from being pushed to the enlarged section 62 when positioned as shown in Figure 8A.
  • the opposed parallel inner surfaces 70 may be gaped apart by distance 82 wherein the gap 82 is equal to or less than two times the thickness 84 of the tube 50 so that the tube 50 is occluded when the tube 50 is positioned in the narrow section 64 as shown in Figure 8.
  • the pinch mechanism 58 may be a closed loop so that the pinch mechanism
  • the pinch mechanism 58 cannot be inadvertently removed from the tube 50 when transitioning the pinch mechanism 58 between the occluded position (see Figure 8A) and the open position (see Figure 8). Additionally, the pinch mechanism 58 may be attached to the tube 50 by way of the tether 80. One end of the tether 80 is permanently affixed to the exterior surface of the pinch mechanism 58 to mitigate interference of the operation of the pinch mechanism 58 when transitioning between the two positions shown in Figures 8 and 8A. The other end of the tether 80 may be permanently affixed to the exterior surface of the tube 50, as shown in Figures 7 and 9.
  • the tether 80 may be fabricated from a flexible plastic material, cord, metallic material or other materials known in the art or developed in the future.
  • the tether 80 may be attached to the pinch mechanism 58 and the tube 50 by way of an adhesive, sonic welding, embedment and other methods known in the art or developed in the future.
  • the user To operate the pinch mechanism 58, the user either pushes the enlarged section 62 in the direction of arrow 83 (see Figure 8A) to traverse the tube 50 into the enlarged section 62 and allow fluid to flow through the tube 50. To occlude the tube 50 and prevent fluid from flowing through the tube 50, the user may push the pinch south 58 in the direction of arrow 86 (see Figure 8).
  • the pinch mechanism 58 may be fabricated from a generally rigid material so that the tube 50 remains occluded when the tube 50 is disposed in the narrow section 64 as shown in Figure 8A. If the pinch mechanism 58 is fabricated from a more flexible material, then the gap 82 between the parallel surfaces 70 may be reduced to allow for the outward flexing that might occur when the tube 50 is disposed in the narrow section 64.
  • the pinching mechanism 58 is used when first installing the drainage cannula into the patient.
  • the patient's bodily fluid may seep into the cannula and leak out of the proximal end of the cannula.
  • the medical professional engages the pinching mechanism 58 to occlude the tube 50 by traversing the tube 50 to the narrow section 64 (see Figure 8A). Bodily fluid is not allowed to flow through and leak out of the proximal end of the tube.
  • the suction and reservoir system 44 is connected to the tube 50, the user pushes the pinching mechanism 58 in the direction of arrow 83 shown in Figure 8A.
  • the tube 50 enters the enlarged section and the tube 50 is no longer occluded. Bodily fluid is allowed to flow through the tube 50.
  • the user occludes the tube 50 by pushing the pinching mechanism in the direction of arrow 86 shown in Figure 8 to traverse the tube 50 into the narrow section 64.
  • the reservoir is replaced and after replacement, the pinching mechanism 58 is traversed back to the position shown in Figure 8 by pushing the pinching mechanism in the direction of arrow 83.
  • the pinch valve 88 may be disposed over the tube 50 as shown in Figure 11 A to occlude the lumen 60 of the tube 50.
  • the pinch mechanism 88 may also be removed off of the tube 50 as shown in Figures 10 and 11 which allows the tube 50 to naturally expand and allow fluid to flow through the lumen 60 of the tube 50.
  • the pinch mechanism 88 may also be attached to the tube 50 by way of tether 80 as described above in relation to Figures 7-9.
  • the pinch mechanism 88 may have a horse shoe configuration as shown in
  • the pinch mechanism 88 may have a narrow opening 90 defining a width 92.
  • the pinch mechanism 88 may expand from the narrow opening 90 into an inner cavity 94 in which the tube 50 is disposed when the pinch mechanism 88 is being used to occlude the lumen 60 of the tube 50.
  • the inner cavity 94 may also define a lateral width 96.
  • the lateral width 96 is greater than the width 92 of the opening 90 so that the tube 50 remains within the pinch mechanism 88 when the tube 50 is disposed within the pinch mechanism 88.
  • the lateral width 96 may be equal to the width 92 of the opening 90.
  • an internal length 98 is preferably greater than a flattened length 100 of the tube 50 such as when the tube 50 is disposed within the pinch mechanism 88 (see Figure 11 A).
  • the pinch mechanism 88 may also be fabricated from a generally rigid material to prevent any type of opening or flex when the tube 50 is being inserted into the pinch mechanism 88 or when the tube 50 is disposed within the pinch mechanism 88. However, it is also contemplated that the pinch mechanism 88 may be fabricated from a generally resilient material to allow the opening 90 to be enlarged to assist in the insertion of the tube 50 into the inner cavity 90 of the pinch mechanism 88. However, in all circumstances, the pinch mechanism is sufficient to squeeze and occlude the lumen 60 of the tube 50.
  • the pinching mechanism 88 is used when first installing the drainage cannula into the patient.
  • the patient's bodily fluid may seep into the cannula and leak out of the proximal end of the cannula.
  • the medical professional engages the pinching mechanism 88 to occlude the tube 50. Bodily fluid is not allowed to flow through and leak out of the proximal end of the tube.
  • the suction and reservoir system 44 is connected to the tube 50, the user pushes and/or pulls the pinching mechanism 88 off of the tube 50 as shown in Figure 11. The pinching mechanism is removed from the tube 50 and the tube 50 is no longer occluded.
  • Bodily fluid is allowed to flow through the tube 50.
  • the user occludes the tube 50 by pushing the pinching mechanism 88 back onto the tube 50 as shown in Figure 11 A.
  • the reservoir is replaced and after replacement, the pinching mechanism 88 is removed from the tube.
  • the pinching mechanism 88 is secured to the tube 80 by way of tether.
  • pinch mechanisms 58, 88 discussed above were discussed in relation to the anchor embodiment wherein the anchor tab 12 is fabricated from a material that can be punctured with a needle. However, it is also contemplated that the pinch mechanisms 58, 88 may also be applied to the other anchor tabs 14, 16/42 shown in Figures 12 - 15.

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  • Health & Medical Sciences (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hematology (AREA)
  • Public Health (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Engineering & Computer Science (AREA)
  • Veterinary Medicine (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Pulmonology (AREA)
  • Biophysics (AREA)
  • Surgery (AREA)
  • Vascular Medicine (AREA)
  • Otolaryngology (AREA)
  • Media Introduction/Drainage Providing Device (AREA)
  • External Artificial Organs (AREA)

Abstract

L'invention concerne une canule de drainage ayant l'un des trois types différents de languettes d'ancrage. La languette d'ancrage empêche un mouvement de la canule après le positionnement d'une partie distale de la canule à l'intérieur du corps du patient et après la fixation de la languette d'ancrage au corps du patient (par exemple, la peau). De plus, un mécanisme de pincement est conçu pour bloquer sélectivement la canule.
PCT/US2014/018758 2013-03-14 2014-02-26 Canule de drainage ayant une languette d'ancrage WO2014158616A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP14773296.0A EP2968845A4 (fr) 2013-03-14 2014-02-26 Canule de drainage ayant une languette d'ancrage

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US13/828,442 2013-03-14
US13/828,442 US9480827B2 (en) 2013-03-14 2013-03-14 Drainage cannula with anchor tab
US13/892,131 US20140088568A1 (en) 2013-03-14 2013-05-10 Drainage cannula with anchor tab
US13/892,131 2013-05-10

Publications (1)

Publication Number Publication Date
WO2014158616A1 true WO2014158616A1 (fr) 2014-10-02

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2014/018758 WO2014158616A1 (fr) 2013-03-14 2014-02-26 Canule de drainage ayant une languette d'ancrage

Country Status (2)

Country Link
EP (1) EP2968845A4 (fr)
WO (1) WO2014158616A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4500311A (en) * 1983-02-23 1985-02-19 American Hospital Supply Corporation External ventricular drainage assembly
WO1993004726A1 (fr) * 1991-09-05 1993-03-18 Sherwood Medical Company Appareil de positionnement d'un catheter
US20030018309A1 (en) * 2001-07-17 2003-01-23 Breznock Eugene Michael Method and apparatus for chest drainage
US20070083189A1 (en) * 2005-03-16 2007-04-12 Lampropoulos Fred P Locking drainage catheter with rotatable lever handle and release tool

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US5382239A (en) * 1992-04-24 1995-01-17 Becton, Dickinson And Company Repositional catheter fixation device
US5853398A (en) * 1997-12-19 1998-12-29 Baxter International Inc. Container with pivoting tube clamp
WO2004030600A2 (fr) * 2002-09-30 2004-04-15 Damage Control Surgical Technologies, Inc. Methode et dispositif de drainage thoracique a deploiement rapide
US6840492B1 (en) * 2003-11-21 2005-01-11 Alaris Medical Systems, Inc. Slide clamp
US20050277873A1 (en) * 2004-05-27 2005-12-15 Janice Stewart Identification information recognition system for a medical device
WO2006079827A1 (fr) * 2005-01-27 2006-08-03 University College London Hospitals Nhs Foundation Trust Ensemble de tube de drainage pour drainer une cavite corporelle
US20080243082A1 (en) * 2007-03-30 2008-10-02 Closure Medical Corporation System for surgical drain fixation
WO2012119086A1 (fr) * 2011-03-02 2012-09-07 Allegheny-Singer Research Institute Dispositif permettant de fixer un tube de drainage

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4500311A (en) * 1983-02-23 1985-02-19 American Hospital Supply Corporation External ventricular drainage assembly
WO1993004726A1 (fr) * 1991-09-05 1993-03-18 Sherwood Medical Company Appareil de positionnement d'un catheter
US20030018309A1 (en) * 2001-07-17 2003-01-23 Breznock Eugene Michael Method and apparatus for chest drainage
US20070083189A1 (en) * 2005-03-16 2007-04-12 Lampropoulos Fred P Locking drainage catheter with rotatable lever handle and release tool

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP2968845A4 *

Also Published As

Publication number Publication date
EP2968845A1 (fr) 2016-01-20
EP2968845A4 (fr) 2017-04-19

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