US3570497A

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Publication number: US3570497A
Application number: US791708*A
Authority: US
Inventors: Gerald M Lemole
Original assignee: Individual
Current assignee: Individual
Priority date: 1969-01-16
Filing date: 1969-01-16
Publication date: 1971-03-16
Anticipated expiration: 1988-03-16

Abstract

The invention is a suture with needle end, cord of latch notches, and latch collar end. The latch collar has a latch passage therethrough. The needle followed by latch notches is pulled through the tissue and the needle followed by a selective number of latch notches is continued on through the collar latch passage and severance is then made above the last notch pulled through the latch collar as it thus is latched on the tissue surface to complete a stitch much more quickly than can be done by conventionally tying a suture knot.

Description

United States Patent Gerald M. Lemole 1813 South Blvd., Houston, Tex. 77006 791,708

Jan. 16, 1969 Mar. 16, 1971 Inventor Appl. No. Filed Patented SUTURE APPARATUS ANDMETHODS 10 Claims, 11 Drawing Figs.

U.S. CI. 128/3355, 24/16, 24/30.5, 128/339 Int. Cl. A6lb 17/06, A611 17/00 Field of Search 128/334- 340; 24/16 (PB), 30.5 (PB), 206.1

References Cited UNITED STATES PATENTS 281,704 7/1883 Ladd 24/128 2,199,025 4/1940 128/335 3,009,220 11/1961 24/16 3,123,077 3/1964 128/3355 3,368,247 2/1968 24/16 3,496,940 2/1970 Steinman 128/335 Primary Examiner- Dalton L. Truluck Attorney-William E. Ford ABSTRACT: The invention is a suture with needle end, cord of latch notches, and latch collar end. The latch collar has a latch passage therethrough. The needle followed by latch notches is pulled through the tissue and the needle followed by a selective number of latch notches is continued on through the collar latch passage and severance is then made above the last notch pulled through the latch collar as it thus is latched on the tissue surface to complete a stitch much more quickly than can be done by conventionally tying a suture knot.

Patented March 16, 1971 GERALD M LEMOLE INVIdN'lUR 21/21. $264 A TTOANE) SUTURE APPARATUS AND METHODS The invention relates to suture stitches and to a suture comprised of a needle end, a suture cord of latch notches and a latch collar end by which suture seams may be completed, the latch collar and last latch notch pulled therethrough completing the suture knot, severance above said last latch notch then being made of the leading latch notches and the needle.

Heretofore, in conventional surgery, time is required to tie the suture knot as a stitch is completed. Especially is time saving essential for the completion of surgery-stitches and seams where, in heart surgery, quick application of the heart lung machine is involved. Where suture slippage can be involved, it is often necessary to tie as many as six half hitches in each knot, and where such time requirement per stitch can be so greatly reduced by substituting therefor the time required to snip a latch cord between latch notches of this invention, it can be seen how a great contribution to surgery is herein involved.

Thus, primarily in detail the invention has object of providing a suture and method of making sutures which involves a very substantial time saving per stitch since the suture, comprising latch-collar from which'extends the suture cord of latch notches with needle in lead can be employed to complete a stitch with needle from tissue, followed by latch notches, being passed through the collar latch passage and the suture cord (and needle) then being severed as by snipping the cord just above the last latch notch that has been pulled through the latch collar.

Also, the invention has the broadprimary object of providing a suture, complete with needle, which self latches with its latch collar to complete a stitch, the needle and leading notches being detached by snipping the latch cord above the last latching notch pulled through the latch collar.

Additionally, the invention has as its other broad primary object, the provision of a method of suture stitching in which the suture is latched with itself to complete a stitch, the leading part (needle and leading latch notches) then being detached to leave a completed stitch.

Furthermore, the invention has as an important object the provision of a self-latching suture with needle, and with suture cord and latch collar of resiliently yieldable material, the suture cord severance above the selective latching notch requiring minimum time consumption.

Additionally, the invention has as another object the provision of a method of suture stitching in which a unitary suture is lead through tissue and out therefrom through the suture rear to latch therewith, the lead part beyond the latch then being severed to leave a completed, unencumbered, firmly latched stitch.

Other and further objects will be apparent when the-specification herein is considered in connection with the drawings, in which:

FIG. 1 is an isometric view of suture apparatus as comprised in one embodiment of the invention;

FIG. 2 is an isometric view of the latch collar end and of part of the needle and latch'notch portion of another embodiment of the invention;

FIG. 3 is an elevational view of the latch collar end and of part of the needle and latch notch portion of still another embodiment of the invention;

FIG. 4 is an elevational view of the latch collar end and of part of the needle and latch notch portion of yetanother embodiment of the invention;

FIG. 5 is an elevational view of the latch collar end and of part of the needle and latch notch portion of still a further embodiment of the invention;

FIG. 6 is an elevational view illustrative of the initial or needle insertion step employing any one of the forms of the invention disclosed in FIGS. 1-5, inclusive;

FIG. 7 is an elevational view illustrative of the following step after that shown in FIG. 6, in which latch notches are pulled through after the needle;

FIG. 8 is an elevational view of the following step after that shown in FIG. 7, in which the needle is followed by latch notches passed through the latch collar;

FIG. 9 is an elevational view of the following step after that shown in FIG. 3, ,in which the latch collar is approximated over the seam to be stitched, prior to pulling the last selective latch notch through the latch collar;

FIG. 10 is an elevational view of the final step after that shown in FIG. 9, with the stitch completed by latch collar and selective latch notch, and the outer latch notches and needle removed; and

FIG. 11 is an enlarged sectional elevational view of a portion of the latch collar and latch cord indicative of the manner in which a latch stitch is completed.

Referring now in detail to the drawings in which like reference numerals are applied to like elements in the various views,suture apparatus 10 is shown in FIG. 1 comprised of aneedle 11 arched from the plane of thelatch cord 12 in direction of incision with piercing point l3 outermost and widening to a needle base 145 which is connected to the outermost portion of achain 15 ofsuccessive latch notches 16, aconventional rivet 27 being shown for this purpose in H6. 1. Also and additionally, the outermost portion of thelatch notch chain 15 may be bonded to the needle base.

Eachlatch notch 16 has a base orlatch leg 17, which extends normal to theflat latch strip 18 in the direction of incision, with the hypotenuse side l9'of the eachindividual latch notch 16 extending angularly along a taper or slope to thelatch strip 18 at the base leg of the next outwardlylatch notch 16. At the end of thelatch notch chain 15, theflat strip 20 extends as a connector to ajunction 23 with alatch collar 21. Thelatch collar 21 is shown in FIG. 1 of block form, with a latch opening 22 formed therethrough on the side opposite thejunction 23.

Beyond theneedle 11, the whole suture apparatus orcord 12 may be integrally formed, including thelatch collar 21, of a plastic material as polyvinyl chloride, polyethylene and the like whereby thelatch cord 12 possesses some substantial degree of resiliency. As formed, the opening 22 is of larger cross-sectional area on the underside 24 of thelatch collar 21 than on the upper orouter side 25, or thus the sides of the opening 22 may extend with a degree of taper from under side to outer side.

Suture apparatus 10a, FIG. 2, provides latch notches 16a in form of truncated tetrahedral pyramids, the uppermost notch 16a being connected by a plastic orresilient material connector 28 to aneedle base 14a. Also aconnector 20a comprising an integral part of the resilient material or plastic latch cord 12a is provided to connect the latch notch chain 150 and thelatch collar 210. In this view the opening 22a through the latch collar 21a may be tapered from an, opening of larger cross-sectional area on the under side, not shown, to an area of smaller cross-sectional area at the top side of the latch collar. Optionally the opening 22a may be of uniform cross-sectional area from under side to top side.

Making reference now to FlG. 3, suture apparatus 10b is provided with latch notches l6! in form of frustocones, with the upper end of the latch notch chain 1512 connected by means of a resilient material or plastic connector 281) to the base 14b of a needle, both connector and needle base being of the same round cross section in area. The lower end of the latch notch chain lfib is shown connected by a conveniently formed connector 20b, of the same resilient material or plastic, to the latch collar 21b. Particularly, as shown in FIG. 3, the connector portion 2%, is of round cross section of the same diameter as the latch notch base from which it extends, while the connector portion 29b merges to a flattened cross section and of the contour shown.

Noticeably, in FIG. 3, the latch collar 21b is of frustoconicul shape, with the base lowermost. The opening 221) through the latch collar may be of cylindrical shape, or tapered with the opening 22b of slightly greater lowermost diameter than necdle base Mb and connector 28b, and of slightly lesser uppermost diameter than these elements. In FIG. 3, the opening 22b has been expanded, thus to receive the connector 28b therethrough, and the opening must be further expanded to receive the frustoconieal latch notches 16b therethrough. This is possible since the latch collar 21b is of a resilient, flexible, deformable, or plastic material, the latch cord 12b also being of the same material.

As shown in FIG. 4, suture apparatus c shows needle base 140 andconnector 28c, of same outer diameter, with thelatch notches 160 of latch notch chain 150 being in the form of truncated trihedral pyramids. A connector Zllc hasportion 29c, of diameter to circumscribe latch notch base, extending fromlowermost latch notch 160; the portion 290 merging into aconnector portion 29d, of flattened cross section, and of the contour shown in FIG. 2, to connect with the underside of thelatch collar 210. The latch collar 21c is also shown to be in the form of a truncated trihedral pyramid with base downwardly. The opening 220 through the latch collar is indicated as being of round cross section, and such opening may preferably be tapered with uppermost diameter slightly less than the diameter of the needle base 140 andconnector 28c and with the lowermost diameter, not shown, of slightly greater diameter than these elements.

Suture apparatus 10d, FIG. 5, is constructed and of part sizes comparable to the suture apparatus shown in FIG. 3, with the exception that the latch notches 16d are of spheroid shape. Theconnector 20c between the lowermost spheroid center plane and thelatch collar 21d, is connected to such lowermost half-spheroid by a round orcylindrical connector portion 29c which merges intoconnector portion 29f of flattened cross section as connected with thelatch collar 21d, and of configuration shown in FIG. 5. Also, as in FIG. 3, thelatch collar 21d, FIG. 5, is shown to'be in form of a frustocone with opening 22d to receive first the needle point, thenneedle base 14d, thenconnector 28d, and then selective latch notches 16d of the latch notch chain 15d therethrough. Thus, it is preferable that the opening 22d be tapered from uppermost diameter slightly less than the diameters ofconnector 28d andneedle base 14d, and with lowermost diameter slightly greater than the diameters of these elements. Thus the needle point may be passed through the latch collar opening 22d, and the opening stretched to admit theneedle base 14d,connector 28d, and the selective spheroid latch notches 16d therethrough.

It is characteristic of all of the forms of invention shown in FIGS. 15, inclusive, that all of the elements below the needle base are of the same material, as a treated rubber, or as a resilient, yieldable or deformable material, as a plastic, Only the needle should be of a rigid material, and there can be plastics capable of being hardened to form a serviceable needle to which a connector or uppermost latch notch may be bonded or otherwise connected. The needle bases shown in FIGS. 2--5, inclusive, may be connected to the respective connectors therebelow, as by bonding interfitted abutting needle base and connector ends, as by employing fluid epoxy resin to harden as a bonding agent. In these FIGS, structural variations made to interfit needle base and connectors for bonding are not shown, it only sufficing to indicate diagrammatically at 30 that bonding is made. Also minute rivets may be used, as indicated in FIG. 1.

Noticeably, it may be possible that the entire suture apparatus or complete stitch element or structure may be fabricated at the same time of plastic, the plastic of the needle being adapted to harden into, or being preformed of, a portion of rigidity and strength to serve the function of a needle in piercing the flesh or tissue, and in guiding or leading the suture cord through the tissue on each side of the incision and through the latch collar. This is within the realm of capabilities of plastics, and also such needles can be constituted in manner not to shred off any portion thereof to leave the wound unclean.

If reference is now made to FIGS. 6-40, successively, the steps of making a suture stitch may be visualized. First theneedle 1?. is inserted withpoint 13 to pierce into the skin or surface layer of asurgery patient 31. Thepoint 13, with the curved needle thereafter, is moved downwardly through the flesh ortissue 32 to extend across theincision 33 at some spaced distance below the surface or dermic layer. Then the needle point is moved upwardly so that thepoint 13, arched in direction of incision, pierces the dermic layer of skin surface of the patient at some distance spaced from the point of needle puncture upon entry. See FIG. 6.

Then the needle is drawn through dermic layer, tissue and/or flesh, across incision, up through tissue and/or flesh, and out through the dermic layer, pulling the leadinglatch notches 16 therewith. Next theneedle 11 and leadinglatch notches 16 are pulled through the last or outward skin puncture from the tissue and/or flesh below, and all of the needle and part of the latch notches are thus free from the patient's body. (FIG. 7).

Next the needle, as freed, and theleading latch notches 16, are passed through theopening 22 in thelatch collar 21. As theopening 22 is tapered, at least through one side thereof, as will be hereinbelow described, eachlatch notch 16 is contracted in passing through the upper end of theopening 22, then to extend to normal position with thelatch leg 17 to rest upon the latch collartop surface 24, as shown in small scale in FIG. 8.

FIG. 9, to slightly larger scale than FIGS. 6-8, shows the suture orlatch cord 12 being grasped by a pliers or pulling tool type offorceps 34 as afinger 35 pushes down upon thelatch collar 21, thus forcing the latch collar toward a flat position with underside 25 in contact upon thedermic layer 36 of thepatient 31, as the last of the selective latch notches l6 pulled through thelatch collar 21.

Finally, FIG. 10 shows the completion of a stitch, with thelatch collar 21 bridging across theincision 33, as its underside 25 seats on thedermic layer 36 on either side of the incision. Thus the latch orsuture cord 12 extends from itsjunction 23 down inwardly through the flesh ortissue 32 and across theincision 33 inwardly of the dermic layer, then outwardly through the flesh ortissue 32 and through thedermic layer 36 andlatch collar opening 22 with thelast notch 16 to be pulled through the latch collar latching upon itsupper surface 24. Slightly above this latchingnotch 16 thelatch chain 15 has been severed, and the leading latch notches and the needle in advance thereof are not shown. Thus these members, not shown in FIG. 10, may be assumed to have been removed and/or expended.

Referring now to FIG. 11, thelatch collar 21 andlatch notch chain 14 are shown in part, and to enlarged scale, with the relationship of theopening 22 and latchnotches 16 thus being shown in substantially graphic detail. As thelatch notches 16 are pulled through the flesh and dermic layer, these members tend to contract. Also, as thelatch notches 16 are successively pulled into the entrance through theunder surface 25 of thelatch collar 21, up through theopening 22, as it is tapered to a smaller cross-sectional area outlet through the top orouter surface 24 of the latch collar, the latch notches are successively contracted. The notch that has just been pulled clear of theopening 22 extends outwardly to assume its original shape so that theleg 17 of the latch notch 16 seats upon the top or outerlatch collar surface 24 to complete a stitch. As the latch notches, outwardly of thelatch notch 16 atoptheupper surface 24 of thelatch collar 21, have no further function, thelatch chain 15 may be severed, as along the severance line 37, FIG. 11, and the outer latch notches and needle removed and/or expended, as aforesaid.

Noticeably in FIG. 11, eachlatch notch 16 is shaped so that theleg 17 straightens out and overextends thetop surface 24 of thelatch collar 21 when such particular latch collar has just been pulled upwardly completely to pass through theopening 22. The same theory of construction obviously applies to the forms ofinvention shown in FIGS. 25.

It often happens that incisions of substantial length and depth have to be made, a; for instance, in heart surgery, as to install a heart pump, or in heart replacement. Since it is so vital that after installation, the incision must be sewed up as quickly as possible, an invention of the kind hereinabove disclosed may be extended into apparatus for enabling a plurality of stitches to be completed in quickest order to extend all around a lengthy incision as hereinabove referred to.

In this case the latch collar may be constructed to straddle the whole, or a substantial part of, the length of an incision and have a multiple of latch openings provided therein in spaced relation therearound. A suture cord with expendable needle may be provided to be passed through each opening. Apparatus of this type can thus result in a greatest time saving where time is of the greatest essence in sewing up the incision after an operation, as for purposes hereinabove described.

The invention sets out to provide surgical apparatus which will enable the quick sewing up of an incision, for the length thereof, by use of a plurality of devices each providing the structure for a suture stitch in such relative disposition and arrangement, as to the parts thereof, that each suture stitch may be made in the briefest time.

A number of separate structural embodiments are shown and described. In this regard it is set forth that the structures shown are greatly exaggerated in scale, whereas it is most important that the latch notches are small enough, (not much larger in dimension than conventional suture cords in diameter), that they do not force too large a passage through the flesh or tissue. Still there must be enough area of the latch notch lower surface to overextend the latch collar outwardly of the latch chain or core of the latch cord, that the latch chain, including the latching notch, may not be pulled back through the latch collar.

Such a number of satisfactory forms and embodiments are shown as to demonstrate that still other embodiments may be included within the extent of the invention. In addition to the drawings and hereinabove disclosure, the claims appended hereto complete the application by claim definition.

lclaim:

1. A suture including a needle and a unitary, resilient, selflatching suture cord having successively after the needle, a series of latch notches, a connector portion, and a latch collar from which the connector portion extends, the latch collar providing a shaped notch passage therethrough with the latch collar yielding resiliently to permit latch notches following the needle to be pulled in selective number through the latch passage and with said latch notches being resiliently yieldable and shaped so that the last notch pulled through the latch collar returns to initial shape and relative position to latch cord and to latch upon latch collar uppersurface.

2. A suture as claimed inclaim 1 in which said suture cord between said latch notches is easily severable whereby the needlewith leading notches maybe detached by severance above said last notch.

3. A suture as claimed inclaim 1 in which said latch notches are of truncated, tetrahedeal, pyramidal shape with bases downwardly.

4. A suture as claimed inclaim 1 in which said latch notches are of truncated conical shape with bases downwardly.

5. A suture as claimed inclaim 1 in which said latch notches are of truncated trihedral, pyramidal shape with bases downwardly.

6. A suture as claimed inclaim 1 in which said latch notches are of flattened spheroid shape.

7. A suture as claimed inclaim 1 in which said latch notches are of substantially triangular cross section with bases downwardly and extending on one side of the latch cord.

8. A suture as claimed inclaim 1 in which said latch notches are of substantially triangular cross section with bases downwardly and extending on one side of the latch cord, in which the needle puncture end is arched to the same side as that to which the notch bases extend, and in which the base end of the needle is bonded with the lead end of the latch cord.

9. A suture as claimed inclaim 1 which is comprised of a resilient plastic material.

10. A suture as claimed in claim 1 m WhlCh the latch cord connector is of flattened cross section.

Claims

1. A suture including a needle and a unitary, resilient, selflatching suture cord having successively after the needle, a series of latch notches, a connector portion, and a latch collar from which the connector portion extends, the latch collar providing a shaped notch passage therethrough with the latch collar yielding resiliently to permit latch notches following the needle to be pulled in selective number through the latch passage and with said latch notches being resiliently yieldable and shaped so that the last notch pulled through the latch collar returns to initial shape and relative position to latch cord and to latch upon latch collar upper surface.

2. A suture as claimed in claim 1 in which said suture cord between said latch notches is easily severable whereby the needle with leading notches may be detached by severance above said last notch.

3. A suture as claimed in claim 1 in which said latch notches are of truncated, tetrahedeal, pyramidal shape with bases downwardly.

4. A suture as claimed in claim 1 in which said latch notches are of truncated conical shape with bases downwardly.

5. A suture as claimed in claim 1 in which said latch notches are of truncated trihedral, pyramidal shape with bases downwardly.

6. A suture as claimed in claim 1 in which said latch notches are of flattened spheroid shape.

7. A suture as claimed in claim 1 in which said latch notches are of substantially triangular cross section with bases downwardly and extending on one side of the latch cord.

8. A suture as claimed in claim 1 in which said latch notches are of substantially triangular cross section with bases downwardly and extending on one side of the latch cord, in which the needle puncture end is arched to the same side as that to which the notch bases extend, and in which the base end of the needle is bonded with the lead end of the latch cord.

9. A suture as claimed in claim 1 which is comprised of a resilient plastic material.

10. A suture as claimed in claim 1 in which the latch cord connector is of flattened cross section.