WO1991007916A1 - Suture device - Google Patents
Suture device Download PDFInfo
- Publication number
- WO1991007916A1 WO1991007916A1 PCT/US1990/006871 US9006871W WO9107916A1 WO 1991007916 A1 WO1991007916 A1 WO 1991007916A1 US 9006871 W US9006871 W US 9006871W WO 9107916 A1 WO9107916 A1 WO 9107916A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- loop
- thread
- aperture
- thread member
- projections
- Prior art date
Links
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
- A61B17/12009—Implements for ligaturing other than by clamps or clips, e.g. using a loop with a slip knot
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/04—Surgical instruments, devices or methods, e.g. tourniquets for suturing wounds; Holders or packages for needles or suture materials
- A61B17/06—Needles ; Sutures; Needle-suture combinations; Holders or packages for needles or suture materials
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/04—Surgical instruments, devices or methods, e.g. tourniquets for suturing wounds; Holders or packages for needles or suture materials
- A61B17/06—Needles ; Sutures; Needle-suture combinations; Holders or packages for needles or suture materials
- A61B17/06166—Sutures
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/04—Surgical instruments, devices or methods, e.g. tourniquets for suturing wounds; Holders or packages for needles or suture materials
- A61B17/06—Needles ; Sutures; Needle-suture combinations; Holders or packages for needles or suture materials
- A61B17/06166—Sutures
- A61B2017/06176—Sutures with protrusions, e.g. barbs
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T24/00—Buckles, buttons, clasps, etc.
- Y10T24/14—Bale and package ties, hose clamps
- Y10T24/1402—Packet holders
- Y10T24/141—Plastic bands
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T24/00—Buckles, buttons, clasps, etc.
- Y10T24/14—Bale and package ties, hose clamps
- Y10T24/1498—Plastic band
Definitions
- This invention relates to a suture device. More particularly, this invention relates to a suture device with components for locking the suture upon the application thereof at a surgical site.
- a suture apparatus includes a cord of latch notches, a needle at one end of the cord, and a latch collar at the other end of the cord.
- the latch collar is provided with a passage through which the needle is pulled, followed by a selected number of latch notches. Upon the pulling of a final notch through the collar passage, the cord is severed on a side of the latch collar opposite the side of entry of the cord into the latch passage.
- suture device of U.S. Patent No. 3,570,497 provides a number of advantages over simple suture threads, that suture device has several shortcomings which make it unsuitable for many surgical applications. Particularly in cases requiring fine stitches or ligatures, where the device of Lemole is necessarily small, the needle and cord of that device are inserted through the passage in the latch collar only with appreciable difficulty. Although in some applications, such as in the binding of a sternum or the approximating of ribs, a large suture device is necessary to provide the requisite strength, in other applications com ⁇ plications may arise by leaving a large suture structure at the surgical site.
- U.S. Patent No. 4,069,825 to Akiyama discloses a ligature including a surgical thread with a plurality of spherical or conical projections spaced regularly along the length of the thread. One end of the thread is attached to a cylindrical member having an aperture with a diameter larger than the outside diameter of the projections on the thread.
- the spacings between the projections and the size of the aper- tured member are designed to enable a locking of the thread in a loop about a vessel by means of friction forces which arise between the projections and the apertured member upon a pass ⁇ ing of the thread through the aperture and a subsequent tightening of the loop so formed.
- the ligature disclosed in Akiyama suffers from the the same disadvantages as the suture device of Lemole. Basi ⁇ cally, in cases where fine blood vessels or other ducts are to be closed, the passing of the thread through the apertured member is difficult and requires considerable concentration and patience.
- another ligature comprises an endless loop formed with a con ⁇ tinuous series of ratchet-like ridges or pawl-like teeth.
- One side of the loop is connected via an elongate extension to a finger engaging loop, the extension traversing an opening in a closure member.
- the ridged loop is constricted and the teeth along the endless loop are caught against the closure to lock the endless loop in its con ⁇ stricted configuration.
- An object of the present invention is to provide a suture device of the above-described general type which can be used in both ligating and suturing operations.
- Another object of the present invention is to pro ⁇ vide such a suture device which is easy to use, even in cases requiring a small sutures or ligatures.
- Another, more particular, object of the present invention is to provide such a suture device which is easy and inexpensive to manufacture.
- a further particular object of the present invention is to provide such a suture device which comprises a reduced amount of material.
- a suture device in accordance with the present invention comprises a thread member, a loop member, a connec ⁇ tor element or portion, and a locking component or components.
- the thread member is provided along at least a portion of its length with a series of resilient projections and has an outer diameter defined by the projections.
- the loop member defines an opening having an effective linear dimension or diameter (when the loop is in a circular configuration) substantially larger than the outer diameter of the thread member, while the connector element or portion serves to couple one end of the thread member to the loop member.
- Either the thread member or the connector element or both define at least in part an aper ⁇ ture having a linear dimension smaller than the outer diameter of the thread member, the aperture communicating with the opening in the loop member.
- the locking component or com ⁇ ponents are provided on either the connector element or the loop member or both and serve to prevent a removal of the thread member from the aperture upon a passing of the thread member through the loop member and a subsequent pulling of the thread member into the aperture from the loop member.
- the loop member is preferably in the form of a flexible thread.
- the loop member has an effective linear dimension or diameter (when the loop is in a circular con ⁇ figuration) at least twice as large as the outer diameter of the thread member.
- the resilient projections provided along at least a portion of the thread member have an internal struc ⁇ ture biasing the projections into a collapsed configuration.
- the projections are expandable from that collapsed configura ⁇ tion into an opened configuration upon application of a force directed _ -ngitudinally in one direction along the thread mem ⁇ ber.
- the _.ter ameter of the thread member is defined by the projections ⁇ ._ the opened configuration.
- a surgeon passes a free end of the thread member through or around a body tissue or organ to be sutured or ligated. Subsequently, the free end of the thread is passed through the loop member so that the thread member forms another loop. The surgeon then pulls the thread member through the loop member so that the thread member passes the locking component(s) into the aperture and so that the loop formed by the thread contracts. Upon the surgeon's continuing to pull the thread member through the aperture, the thread loop is tightened about the body tissue or organ to be sutured or ligated. The locking components automatically prevent the thread member from being withdrawn from the aperture. In a final step of a method, a free end portion of the thread mem ⁇ ber is severed and removed from the fastened suture upon a completion of the thread pulling operation.
- the loop member is severed from the connec ⁇ tor element.
- the method must use a particular suture according to the invention wherein the aperture is contiguous with the connector element and is therefore located on the same side of the loop member as the connector element.
- a locking component is in the form of a protuberance on the loop and projects towards the aperture.
- the protuberances are undercut on a side facing the aperture, with the result that they appear to lean inwardly towards the aper ⁇ ture.
- the protuberances may be disposed across an access channel from one another or may be staggered along the chan ⁇ nel, the channel communicating on the one side with the loop opening and on the other side with the aperture.
- the loop member is provided on a side opposite the connector element and the thread member with an extension such as an additional thread member.
- This extension facilitates the positioning of the loop member to receive the thread mem ⁇ ber. A surgeon uses the thread to hold the loop member out and away from the body tissues being sutured or ligated.
- the projections on the thread member are tapered from a larger transverse dimension down towards an end of the thread member opposite the connector element, while the thread member, the loop member, the connector element and the locking component or components are integrally molded.
- a needle element is attached to the thread member at an end thereof opposite the connector element.
- a suture device comprises a thread mem ⁇ ber provided along at least a portion of its length with a series of resilient projections, the thread member having an outer diameter defined by the projections.
- a loop member defines an opening having a linear dimension substantially larger than the outer diameter, while a connector component or portion joins one end of the thread member to the loop member.
- An aperture forming component is provided on the loop member along a portion thereof spaced from the connector component for defining an aperture having a linear dimension smaller than the outer diameter of the thread member and communicating with the opening defined by the loop.
- At least one locking component is provided for preventing a removal of the thread member from the aperture upon a passing of the thread member through the loop member and a subsequent pulling of the thread member into the aperture from the loop member.
- the locking component advantageously takes the form of at least one protuberance on the loop member or the aperture forming com ⁇ ponent, the protuberance pointing from the loop opening towards the aperture.
- a suture device in accordance with the present invention is easy to use, particularly in cases requiring a small sutures or ligatures.
- the suture device may in such cases comprise a comparatively small amount of material.
- such a suture device can be used in both ligating and suturing operations, in microsurgery and possibly neurosurgery, as well as in more conventional applications such as ligation of blood vessels and other ducts and approximation of ribs and the binding of sternums.
- a suture device in accordance with the present invention provides a suture which is virtually slippage free, even in cases where considerable amounts of stress and tension are involved.
- Such a suture device enables or at least facil ⁇ itates the application of higher magnitudes of force to pro ⁇ vide tighter bonds, closures and ligations.
- Fig. 1 is a side elevational view of a suture device in accordance with the present invention.
- Fig. 2 is a side elevational view of another suture device similar but not identical to the suture device of Fig. 1.
- Fig. 3 is a partial side elevational view, on an enlarged scale, of another suture device in accordance with the present invention.
- Fig. 4 is a partial side elevational view, on an enlarged scale, of yet another suture device in accordance with the present invention.
- Figs. 5 and 6 are partial side elevational views of additional suture devices in accordance with the present invention.
- Fig. 7 is a perspective view, on an enlarged scale, of another embodiment of a suture device in accordance with the present invention, upon use thereof in ligating a blood vessel.
- Figs. 8A through 8D are schematic perspective views showing successive steps in using a suture device in accord ⁇ ance with the present invention, for ligating a vessel or duct.
- Figs. 9A through 9D are schematic perspective views showing successive steps in using a suture device in accord ⁇ ance with the present invention, for closing a wound or cut in a body tissue or organ.
- Fig. 10 is a partial side elevational view of an additional suture device in accordance with the presnt inven ⁇ tion.
- Fig. 11 is a partial side elevational view of yet another suture device in accordance with the presnt invention.
- Fig. 12 is a partial side elevational view of the suture device of Fig. 11, showing a pair of expanded conical projections along a thread member.
- Fig. 13 is a perspective view of the suture of Figs. 11 and 12, in use in the ligating of a blood vessel.
- Fig. 14 is a partial side elevational view of another suture device similar to the device illustrated in Fig. 10. Detailed Description
- a suture device 110 com ⁇ prises a thread member 126, a loop member 124, a connector element 114, and a locking mechanism in the form of a pair of inwardly projecting resilient protuberances 111 and 113 on loop member 124.
- Thread member 126 is formed along a portion of its length with a series of conically tapering projections 128 and has an outer diameter DI defined by a maximum outer transverse dimension of projections 128. Projections 128 each taper from the maximum outer transverse dimension on a side facing connector element 114 to a mimimum traverse dimension at the adjacent projection.
- Loop member 124 defines an opening 115 having an effective linear dimension or overall diameter D2 (when the loop is circularly arranged) substantially larger than outer diameter DI of thread member 126.
- Connector element 114 is in the shape of a Y and serves to couple one end of thread member 126 to loop member 124.
- Loop member 124, connector element 114 and protuberances 111 and 113 define a generally tri ⁇ angular aperture 116 having a linear dimension or size smaller than outer diameter DI of thread member 126.
- aper ⁇ ture 116 has an area smaller than the cross-sectional area of projections 128 at the large ends thereof.
- Protuberances 111 and 113 are undercut on a side facing aperture 116, with the result that the protuberances appear to lean inwardly towards the aperture.
- Linear dimension or overall diameter D2 of loop mem ⁇ ber opening 115 is at least twice as large as outer diameter DI of thread member 126.
- opening 115 of loop member 124 has an area at least four times the cross-sectional area subtended by projections 128 at their largest width or diameter. This substantial difference in the dimensions of opening 115 and thread member 126 enables practical use of the suture. If opening 115 were smaller, relative to the outer diameter DI of thread member 126, than contemplated by the invention, the suture could not perform satisfactorily in surgical applications, inasmuch as the suture is very small. Moreover, during surgical operations surgeons wear gloves which interfere with facile manipulation of thread member 126 and loop member 124 and thus with the threading of the thread member through the loop member. The greater size of opening 115 facilitates a threading operation which otherwise could not be performed at all or could be performed only with the greatest difficulty.
- linear dimension or overall diameter D2 of loop member opening 115 is preferably even larger than twice outer diameter DI of thread member 126.
- diameter D2 may be six times the size of diamter DI.
- opening 115 of loop member 124 has an area at least thirty-six times the cross-sectional area subtended by projections 128 at their largest width or diameter.
- Protuberances 111 and 113 define a passageway or access channel 120 between opening 115 and aperture 116.
- the protuberances serve to prevent a removal of thread member 126 from aperture 116 upon a passing of thread member 126 through opening 115 (i.e., through loop member 124) and a subsequent pulling of thread member 126 into aperture 116 from opening 115 through access channel 120.
- connector element 114 and protuberances 111 and 113 may be considered to form a body member to which thread member 126 on one side and loop member 124 on an opposite side are connected. Aperture 116 is pro ⁇ vided in the body member.
- FIG. 2 another suture device 210 similar to that illustrated in Fig. 1, also comprises a thread member 226, a loop member 224, a connector element 214, and a locking mechanism in the form of a pair of inwardly projecting resilient protuberances 211 and 213 on loop member 214.
- Thread member 226 is formed along a portion of its length with a series of conically tapering projections 228 and has an outer diameter D21 defined by a maximum outer transverse dimension of projections 228. Projections 228 each taper from the maximum outer transverse dimension on a side facing con- nector element 214 to a mimimum traverse dimension on an oppo ⁇ site side.
- Loop member 224 defines an opening 215 having an effective linear dimension or overall diameter D22 (when the loop is in a circular configuration) substantially larger than, i.e., at least twice as large as, outer diameter D21 of thread member 226.
- Connector element 214 is in the shape of a Y and serves to couple one end of thread member 226 to loop member 224.
- Loop member 224, connector element 214 and protuberances 211 and 213 define a generally triangular aper ⁇ ture 216 having a linear dimension or size smaller than outer diameter D21 of thread member 226.
- aperture 216 has an area smaller than the cross-sectional area of projec ⁇ tions 228 at the large ends thereof.
- Protuberances 211 and 213 define a passageway or access channel 220 between opening 215 and aperture 216.
- the protuberances serve to prevent a removal of thread member 226 from aperture 216 upon a passing of thread member 226 through opening 215 (i.e., through loop member 224) and a subsequent pulling of thread member 226 into aperture 216 from opening 215 through access channel 220.
- connector element 214 and protuberances 211 and 213 may be considered to form a body member to which thread member 226 on one side and loop member 224 on an opposite side are connected.
- Suture device 210 differs from suture device 110 in several respects.
- the free end of thread member 226 is pro ⁇ vided with a hook shaped suture needle 232, and loop member 224 is smaller than loop member 124.
- loop member 224 is provided on a side opposite connector element 214 with an extension thread 230, for purposes of facilitating the manipulation of loop 224 by a surgeon or other user, so that loop 224 may be held outwardly to enable easy passage of thread member 226 through opening 215.
- projections 228 are at least partially hollow, while projections 128 are substantially solid.
- projections 228 are hollow, they are collap ⁇ sible during a sewing stroke of thread member 226. Accor ⁇ dingly, thread member 226 presents a smooth or streamlined configuration to body tissues through which the thread member is being pulled during a stitching or sewing stroke. However, in accordance with the self-locking feature of suture device 210, projections 228 expand into an opened configuration upon a pulling of thread member in a reverse direction through aperture 216 after a sewing operation has been completed.
- a suture device 310 comprises a body member 314 generally in the form of a small cylinder or sphere.
- Body member 314 is provided with a star-shaped aper ⁇ ture or bore 316 extending longitudinally (or diametrically, in the case of a sphere) through the body member and provided with a plurality of circumferentially or angularly spaced tapering fingers 318.
- One finger 320 forms an access channel extending to an opening 315 defined in a loop 326 attached to body member 314.
- body member 314 is provided with a resilient inwardly projecting protuberance 311.
- Suture device 310 also comprises a thread 326 attached to the outer surface of body member 314 on a side thereof opposite access channel 320.
- the other end of thread 324 is unattached, i.e., a free end.
- Thread member 326 is provided along at least a por ⁇ tion of its length with a multiplicity of substantially equi- spaced ribs 328. Ribs 328 have an outer diameter substan ⁇ tially smaller than a linear dimension or diameter of opening 315, whereby thread member 326 with ribs 328 easily passes through opening 315.
- Protuberance 311 serves to prevent a removal of thread member 326 from aperture 316 upon a passing of thread member 326 through opening 315 (i.e., through loop member 324) and a subsequent pulling of thread member 326 into aperture 316 from opening 315 through access channel 320.
- connector element 314 and protuberances 311 and 313 may be considered to form a body member to which thread member 326 on one side and loop member 324 on an opposite side are connected.
- Fig. 4 depicts a suture device 410 similar to suture device 310, insofar as suture device 410 also comprises a body member 414 generally in the form of a small synthetic resin or polymeric cylinder.
- Body member 414 is formed with a star- shaped aperture or bore 416 having several tapering fingers 418.
- One finger 420 is open on an outer side and extends to an outer surface 422 of body member 414.
- Suture device 410 also comprises a first thread 424 and a second thread 426.
- First thread 424 is attached at its opposite ends to outer surface 422 on opposite side of finger 420 to form a loop, while one end of second thread 426 is connected to body member
- Thread 424 is pro ⁇ vided along at least a portion of its length with a multi ⁇ plicity of flattened, tire shaped ribs 428.
- the loop formed by thread 424 of suture device 410 is smaller than loop 324 of suture device 310.
- thread 424 is connected at a point approximately midway along its length to one end of a third thread 430. The other end of thread 430 is free.
- Body member 414 is provided along finger 420 with a pair of resilient inwardly projecting protuberances 411 and 413 which serve to prevent a removal of thread member 426 from aperture 416 upon a passing of thread member 426 through an opening 415 defined by thread 424 and upon a subsequently pulling of thread member 426 into aperture 416 from opening
- a suture device 510 com ⁇ prises a body member 514 generally in the form of a small cylinder or sphere.
- Body member 514 is provided with a star- shaped aperture or bore 516 extending longitudinally (or diametrically, in the case of a sphere) through the body mem ⁇ ber and provided with a plurality of circumferentially or angularly -paced tapering fingers 518.
- One finger 520 extends to an outer surface 522 of body member 514.
- Suture device 510 also comprises a first thread 524 attached at its opposite ends to outer surface 522 on opposite side of finger 520 to form a loop defining an opening 515.
- One end of a second thread 526 is attached to outer surface 522 of body member 514 on a side thereof opposite finger 520. The other end of thread 524 is unattached.
- Thread 524 is provided along at least a portion of its length with a multiplicity of barbs, teeth or serrations 528 which are inclined from the free end of thread 526 towards the attached end thereof, i.e., towards body member 514.
- Body member 514 is provided along finger 520 with a pair of resilient protuberances 511 and 513 projecting inwardly towards aperture or bore 516.
- Protuberances 511 and 513 are staggered with respect to one another, protuberance 513 being closer than protuberance 511 to the center of aper ⁇ ture 516.
- Protuberances 511 and 513 serve the locking or blocking function described above.
- another suture device 610 in accordance with the invention includes a body member 614 with a substantially cylindrical aperture 616 communicating via a passageway or access channel 620 with a loop formed by a thread 624 attached at its ends to an outer surface 622 of body member 614 on opposite sides of channel 620.
- a thread 626 is connected at one end to body member 614 on a side thereof opposite channel 620 and thread 624.
- Thread 626 is provided along at least a portion of its length with a multi ⁇ plicity of barbs, teeth or serrations 628 which are inclined outwardly from the free end of thread 626 towards body member 614.
- Teeth 628 are triangular and are provided in longi ⁇ tudinally spaced arrays of four circumferentially spaced teeth.
- Body member 610 is provided in channel 620 with an inwardly directed barb, hook or fingerlike protuberance 211 which overlaps the inner end of channel 620 and acts as a one ⁇ way valve member to close that channel to the removal of thread 624 upon the lodgement thereof in aperture 616.
- Fig. 7 illustrates the disposition of a suture device 710 (basically the same as suture devices 110 and 210) with respect to a blood vessel 34 upon the completion of an operation attaching the suture device to the vessel to close it.
- Suture device 710 includes a thread 726 provided along at least a portion of its length with a series of conically tapered projections 728. Thread 726 extends from a Y-shaped body member 714 around the circumference of vessel 34 and through a triangular aperture 716 in the body member. A free end of thread 726 is locked to body member 714 in part by a pair of protuberances 711 and 713 incorporated in body member 714.
- Protuberances 711 and 713 are resilient finger shaped elements defining an access channel (not designated) com ⁇ municating with aperture 716 and serving to enable a surgeon to slip thread 726 into the aperture and to prevent the thread from slipping out of the aperture back through the access channel.
- the free end of thread 726 is also locked to body member 714 because projections 728 are too large, at their wide ends, to pass back through aperture 716.
- a loop 724 con ⁇ nected to body member 714 and the free end of thread 726 extending beyond body member 714 are severed near body member 714.
- suture device 510 to an open blood vessel 36 or other tubular duct is schematically shown in Figs. 8A through 8D.
- the open end of vessel 36 is first clamped by a hemostat 38 or other surgical instrument.
- the free end of thread 526 is passed around the vessel.
- the free end of thread 526 is then passed through through loop 524.
- thread 526 is slipped through open finger or passageway 520 into bore 516.
- thread 526 is pulled longitudinally through bore 516 until the loop formed by the thread has tightened sufficiently to close off and clamp blood vessel 36.
- serrations 528 function to prevent thread 526 from slipping back through bore 516 and to thereby lock the suture device around blood vessel 36.
- thread 526, as well as thread 524 is severed at a point near body member 514, as shown in Fig. 8D. Hemostat 38 may then be removed from the end of the clamped vessel.
- suture device 510 to close an open cut 42 is schematically depicted in Figs. 9A through 9D.
- Figs. 9A through 9D The use of suture device 510 to close an open cut 42 is schematically depicted in Figs. 9A through 9D.
- the free end of thread 526 is passed through tissues 40, cut 42 and tissues 44 on the other side of the cut.
- the free end of thread 526 is provided with a relatively inflexible extension 132 in the form of a hook-shaped needle 532.
- needle extension 532 is removed or cut from thread 526 upon the passage of the thread through tissue portion 44.
- the free end of thread 526 is passed through loop 524, as shown in Fig. 9C.
- thread 526 As a loop consequently formed by thread 526 is closed, thereby drawing tissue portions 40 and 44 towards one another to close cut 42, thread 526 is slipped through open finger or passageway 520 into bore 516. Thread 526 is then pulled longitudinally through bore 516 until the loop formed by thread 526 has tightened to close cut 42 and clamp tissue portions 40 and 42 to one another. As described above, serrations 528 function to prevent thread 526 from slipping back through bore 516 and lock the suture device in a clamping configuration to the body tissues. Upon the tightening of thread 526, that thread, as well as thread 524, is severed at a point near body member 514, as shown in Fig. 9D.
- Figs. 9A-9C show surgi ⁇ cal device 510 with an extension 530 on loop 524. Thread 530 serves to facilitate the handling of loop 524 in cases where loop 524 is too small to conveniently manipulate while passing thread 526 therethrough. It is to be further understood that any of the particular embodiments of a suture device described herein may be used in performing the surgical operations described with reference to Figs. 8A-8D and 9A-9D above.
- a suture device 810 com ⁇ prises a thread member 826, a loop member 824, a connector element or joint portion 814, and inwardly projecting aperture forming wings 817 and 818 on loop member 824.
- the suture device further comprises a locking mechanism in the form of a pair of inwardly projecting resilient protuberances 811 and 813 on wings 817 and 818.
- Thread member 826 is formed along a portion of its length with a series of conically tapering projections 828 and has an outer diameter 0D1 defined by a maximum outer transverse dimension of projections 828. Projections 828 each taper from the maximum outer transverse dimension on a side facing joint portion 814 to a mimimum traverse dimension at the adjacent projection.
- Loop member 824 defines an opening 815 having an effective linear dimension or overall diameter OD2 (when the loop is circularly arranged) substantially larger than outer diameter ODl of thread member 826.
- Connector or joint portion 814 serves to couple one end of thread member 826 to loop mem ⁇ ber 824.
- Loop member 824 with inwardly projecting wings 817 and 818, connector 814 and protuberances 811 and 813 define a generally oval aperture 816 having a linear dimension or size smaller than outer diameter ODl of thread member 826.
- aperture 816 has an area smaller than the cross- sectional area of projections 828 at the large ends thereof.
- Linear dimension or overall diameter OD2 of loop member opening 815 is at least twice as large as outer diameter ODl of thread member 826.
- opening 815 of loop member 824 has an area at least four times the cross- sectional area subtended by projections 828 at their largest width or diameter. This substantial difference in the dimen ⁇ sions of opening 815 and thread member 826 enables practical use of the suture. If opening 815 were smaller, relative to the outer diameter ODl of thread member 826, than contemplated by the invention, the suture could not perform satisfactorily in surgical applications, inasmuch as the suture is very small.
- opening 815 facilitates a threading operation which otherwise could not be performed at all or could be performed only with the greatest difficulty.
- loop member opening 815 of suture device 810 has a narrow range of operative sizes. This limitation arises from the fact that loop 824 is not severed during the surgical operation but instead remains an integral part of the suture after surgery has been completed. For example, if suture device 810 is used to close a tubular body organ such as a blood vessel or bile duct, the circumference of loop member 824 cannot exceed twice the circumference of the vessel or duct.
- Protuberances 811 and 813 define a passageway or access channel 820 between opening 815 and aperture 816.
- the protuberances serve to prevent a removal of thread member 826 from aperture 816 upon a passing of thread member 826 through opening 815 (i.e., through loop member 824) and a subsequent pulling of thread member 826 into aperture 816 from opening 815 through access channel 820.
- thread member 826 is looped about a tubular member or is threaded through tissues to be stitched. The thread member is then passed through loop opening 815 and pulled through access channel 820 into aperture 816. Upon a suffi ⁇ cient tightening of the loop formed by thread member 826, the free end of the thread member may be severed. In contrast to loop members 124 and 224 sutures 110 amd 210 (Figs. 1 and 2) , respectively, the loop member 824 of suture 810 is not severed at the end of a stitching or ligating operation.
- Figs. 11-13 illustrate a suture 910 with collapsible hollow conical projections 928 similar to projections 228 of suture device 210 (Fig. 2) , except that projections 928 have an internal structure which biases them into the closed con ⁇ figuration (Fig. 11) . However, when acted upon by a force exerted along a thread member 926 in a direction away from a loop member 924, projections 928 open or expand, as indicated at 929 in Fig. 12. During use of suture 910 in ligating a tubular body organ 930, as shown in Fig. 13, only a single projection 931 is opened or expanded. The other projections 928 remain in a closed configuration, whereby thread 928 presents a smooth surface to contiguous body tissues. Of course, the thread construction of Figs. 11-13 may be used in the all of the particular suture embodiments described above.
- Fig. 14 illustrates a suture device 810'substan ⁇ tially identical to the device 810 of Fig. 10, except that inwardly projecting aperture forming wings 817' and 818' on loop member 824' of device 810' are larger than the cor ⁇ responding wings 817 and 818 of device 810.
- suture device 810' comprises a thread member 826', a loop mem ⁇ ber 824', a connector element or joint portion 814', and inwardly projecting aperture forming wings 817' and 818' on loop member 824'.
- Device 810' further comprises a locking mechanism in the form of a pair of inwardly projecting resilient protuberances 811' and 813' on wings 817' and 818'.
- Thread member 826' is formed along a portion of its length with a series of conically tapering projections 828' and has an outer diameter ODl' defined by a maximum outer transverse dimension of projections 828'. Projections 828' each taper from the maximum outer transverse dimension on a side facing joint portion 814' to a mimimum traverse dimension at the adjacent projection.
- Loop member 824' defines an opening 815' having an effective linear dimension or overall diameter OD2' (when the loop is circularly arranged) substantially larger than outer diameter ODl' of thread member 826'.
- Connector or joint por ⁇ tion 814' serves to couple one end of thread member 826' to loop member 824'.
- Loop member 824' with inwardly projecting wings 817' and 818', connector 814' and protuberances 811' and 813' define a generally oval aperture 816' having a linear dimension or size smaller than outer diameter ODl' of thread member 826 Generally, aperture 816' has an area smaller than the cross-sectional area of projections 828' at the large ends thereof.
- Linear dimension or overall diameter OD2' of loop member opening 815' is at least twice as large as outer diameter ODl' of thread member 826'.
- opening 815' of loop member 824 has an area at least four times the cross-sectional area subtended by projections 828' at their largest width or diameter.
- Protuberances 811' and 813' define a passageway or access channel 820' between opening 815' and aperture 816'.
- the suture devices described herein are all integrally molded pursuant to techniques well known in the art.
- the sutures are made of polyethylene, polypropylene, nylon, tetrafluoroethylene or other synthetic resin or polymeric material which is essentially inert and therefore biochemically safe for sustained contact with the body tissues of human beings and other animals.
- the suture needles are attached to the free ends of the thread members by embedding techniques also well known in the art.
- Suture devices in accordance with the present inven ⁇ tion can be used controlling bleeding vessels, tying off open ducts (e.g., bile ducts), creating anastomoses (connecting the open ends of two tubular sections in a splicing type opera ⁇ tion) , and suturing together flaps of skin or other body tis ⁇ sues on opposite sides of a cut.
- Suture devices as described herein, if appropriately dimensioned, can be used in micro ⁇ surgery and neurosurgery and for such larger scale operations as binding sternums and approximating ribs.
- loop members of the various specific suture devices disclosed herein are made of a flexible, thin, thread-like element.
- the thin thread ⁇ like element facilitates severing of loop member 124 at the end of a suturing operation.
- the thin thread-like element enables loop member 824 to be wound about a body tissue such as a blood vessel or duct.
- the flexibility of loop member 824 enables suture device 810 to conform to the body tissues to which it is attached.
Abstract
Description
Claims
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
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US07/441,314 US4950285A (en) | 1989-11-27 | 1989-11-27 | Suture device |
US441,314 | 1989-11-27 | ||
US525,157 | 1990-05-17 | ||
US07/525,157 US5123913A (en) | 1989-11-27 | 1990-05-17 | Suture device |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1991007916A1 true WO1991007916A1 (en) | 1991-06-13 |
Family
ID=27032755
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US1990/006871 WO1991007916A1 (en) | 1989-11-27 | 1990-11-23 | Suture device |
Country Status (5)
Country | Link |
---|---|
US (1) | US5123913A (en) |
EP (1) | EP0502988A4 (en) |
AU (1) | AU6906191A (en) |
CA (1) | CA2072091A1 (en) |
WO (1) | WO1991007916A1 (en) |
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Also Published As
Publication number | Publication date |
---|---|
US5123913A (en) | 1992-06-23 |
CA2072091A1 (en) | 1991-05-28 |
EP0502988A4 (en) | 1992-12-02 |
AU6906191A (en) | 1991-06-26 |
EP0502988A1 (en) | 1992-09-16 |
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