Classifications

• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
  • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
  • A61B17/12—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord
  • A61B17/132—Tourniquets
  • A61B17/1322—Tourniquets comprising a flexible encircling member
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
  • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
  • A61B17/12—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord
  • A61B17/132—Tourniquets
  • A61B17/1322—Tourniquets comprising a flexible encircling member
  • A61B17/1327—Tensioning clamps
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
  • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
  • A61B17/12—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord
  • A61B2017/12004—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord for haemostasis, for prevention of bleeding
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
  • A61F13/00—Bandages or dressings; Absorbent pads
  • A61F2013/00361—Plasters
  • A61F2013/00365—Plasters use
  • A61F2013/00463—Plasters use haemostatic
  • A61F2013/00468—Plasters use haemostatic applying local pressure

Definitions

• the present invention relates to medical devices used in first aid. More specifically, this invention relates to improvements in tourniquets used for emergency medical use.
• These tourniquets typically include a strap 10 engaged with a substantially rigid base 15 and threaded through or looped around a handle 20 as illustrated in Figure 1.
• strap 10 In order to tighten the tourniquet around a limb, strap 10 is threaded through buckle 25 and handle 20 is twisted thereby causing strap 10 to constrict circumferentially about the limb.
• a significant drawback to these known tourniquets is, under certain circumstances, they do not facilitate speedy deployment to trapped limbs.
• strap 10 In order to deploy these tourniquets to trapped limbs, strap 10 must be manually disengaged from the buckle 25 and subsequently routed around the limb and reengaged with buckle 25 before being tightened. That process requires acute concentration as well as precise dexterity, characteristics that are often not available to an injured person in crisis or a first responder in a high stress environment. In addition, that process delays tourniquet application where even a few seconds of delay can cause fatal blood loss.
• Still another object of the invention is to provide tourniquet suitable for one handed application that minimizes unintended disengagement.
• a tourniquet comprises a base having first and second ends, a constricting band attached to and extending from the first end of the base and a handle engaged with the constricting band.
• a self cinching buckle includes a polygonal frame member and a self cinching member engaged with the frame member and a free end of the constriction band is threaded through the self cinching buckle.
• a hook member is attached to the first end of the base and configured to engage said frame member.
• a locking assembly for a tourniquet comprises
• a locking ring is attached to the structural member.
• at least one of the first and second ends of the handle is configured to engage with the locking ring.
• the locking ring is operatively associated with the handle and at least one of the first and second ends of the handle includes a latching section that engages the locking ring.
• tourniquet article includes a self cinching buckle including a polygonal frame member and a self cinching member engaged with the frame member, the self cinching buckle is configured to have a constriction band threaded therethrough; and a hook member adapted for connection to a tourniquet base, the hook member includes a trough configured to engage the polygonal frame member.
• substantially As used herein "substantially,” “generally,”, “slightly” and other words of degree are relative modifiers intended to indicate permissible variation from the characteristic so modified. It is not intended to be limited to the absolute value or characteristic which it modifies but rather possessing more of the physical or functional characteristic than its opposite, and preferably, approaching or approximating such a physical or functional characteristic.
• FIG. 1 is a plan view of an exemplary tourniquet.
• FIG. 2 is a perspective view of a tourniquet in accordance with an
• FIG. 3 shows a locking assembly for the tourniquet depicted in FIG. 2.
• FIG. 4 depicts a top view of a hook member and strike interface of the locking assembly of FIG. 3.
• the tourniquet according to the invention includes a constricting band 1 10 engaged with a base 1 15.
• Constricting band 1 10 preferably has a width of between about 1 inch and about 3 inches, more preferably a width of between about 1 inch and about 2 inches. In an exemplary embodiment, the constricting band has a width of about 1.5 inches.
• a first end of constricting band 1 10 is fixedly attached, e.g., stitched, to base 1 15 at an attachment point 120. Constricting band 1 10 is then threaded through and/or engaged with a tourniquet handle 125 and reengaged with base 1 15 at a second end as illustrated in Figure 2.
• constricting band 1 10 may be sandwiched between upper and lower base layers 125A and 125B proximate to the second end of base 125. Constricting band 1 10 then extends from the second end of base 125 by at least a sufficient distance to allow constricting band 1 10 to be wrapped around the limb of an average size adult male.
• tourniquet handle 125 may be attached to base 1 15 in the manner described in U.S. Patent No. 7,776,064 which is herein incorporated by reference.
• an exemplary embodiment of the tourniquet according to this invention further includes locking assembly 130 comprising self cinching buckle 135 and hook member 140.
• buckle 135 includes a polygonal frame member 137 having a self cinching member 139 engaged with polygonal frame member 137.
• self cinching member 139 comprises a structural member such as a cuff or bar that extends across an opening of polygonal frame member 137 and forms a tongue and groove type engagement with first and second opposing sides of polygonal frame member 137.
• Constricting band 1 10 is looped around self-cinching member 139 such that by simply pulling the free end of constricting band 1 10 self-cinching member 139 slides along frame member 137 in the direction of arrow A until constricting band 1 10 is pinched between self cinching member 139 and frame member 137.
• frame member 137 is hexagonal.
• frame member 137 may comprise any polygonal shape that will allow self-cinching member 139 to pinch constricting band 1 10 against frame member 137.
• Hook member 140 is pivotally attached to base 1 15 proximate to the first end of base 1 15 and is constructed to form a friction fit with frame member 137.
• hook 140 comprises a cuff having an interior surface 142. It is desirable to keep hook 140 engaged with frame member 137 unless and until a user actively disengages them. Accordingly, to prevent unintended disengagement that may occur, e.g., when the tourniquet is displaced by bouncing against a field medic, a first responder, a solider or hiker's equipment, interior surface 142 is provided with a strike interface comprising a plurality of protrusions 144. Protrusions 144 lock frame member 137 into hook member 140 and minimize accidental disconnection. In addition, protrusions 144 provide an audible alert, i.e., a click, when the user reconnects frame member 137 thus letting them know that the connection is secure.
• an audible alert i.e., a click
• a loop 150 is threaded through eyelet 148 and fixedly attached to base 1 15, e.g., by stitching, to connect hook member 140 to base 1 15.
• Frame member 137 has a rectangular cross section. Accordingly, when frame member 137 is lodged in the crescent trough of hook member 140, as the tourniquet is displaced during patient movement or tactical extraction, hook member 140 is inclined to pivot about loop 150 and is disinclined to pivot about frame member 137 which minimizes the prospect of accidental loosening of constriction band 1 10.

Landscapes

• Health & Medical Sciences (AREA)
• Surgery (AREA)
• Life Sciences & Earth Sciences (AREA)
• Heart & Thoracic Surgery (AREA)
• Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
• Vascular Medicine (AREA)
• Engineering & Computer Science (AREA)
• Biomedical Technology (AREA)
• Reproductive Health (AREA)
• Medical Informatics (AREA)
• Molecular Biology (AREA)
• Animal Behavior & Ethology (AREA)
• General Health & Medical Sciences (AREA)
• Public Health (AREA)
• Veterinary Medicine (AREA)
• Surgical Instruments (AREA)

Priority Applications (8)

Applications Claiming Priority (2)

Publications (2)

Family

ID=44146177

Family Applications (1)

Country Status (11)

Cited By (5)

Families Citing this family (21)

Citations (6)

Family Cites Families (50)

• 2010
  • 2010-12-09 WO PCT/US2010/059689 patent/WO2011072126A2/en active Application Filing
  • 2010-12-09 CA CA2783371A patent/CA2783371C/en active Active
  • 2010-12-09 ES ES10836682.4T patent/ES2609658T3/es active Active
  • 2010-12-09 JP JP2012543281A patent/JP5793148B2/ja active Active
  • 2010-12-09 DK DK10836682.4T patent/DK2509515T3/en active
  • 2010-12-09 BR BR112012013884-7A patent/BR112012013884B1/pt active IP Right Grant
  • 2010-12-09 KR KR1020127014653A patent/KR20120098766A/ko not_active Application Discontinuation
  • 2010-12-09 PL PL10836682T patent/PL2509515T3/pl unknown
  • 2010-12-09 EP EP10836682.4A patent/EP2509515B1/de active Active
  • 2010-12-09 US US12/964,294 patent/US11224441B2/en active Active
  • 2010-12-09 CN CN201080055939.8A patent/CN102883667B/zh active Active
• 2022
  • 2022-10-31 US US17/977,812 patent/US20230057363A1/en active Pending

Patent Citations (6)

Non-Patent Citations (1)

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