# US 10,245,021 B2 · Magnetic U-stitch device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,245,021 B2 - Document ID: US10245021B2 - Status: Granted - Kind: B2 - Application number: 14/455,354 - Filed: 2014-08-08 - Published: 2015-04-09 - Granted: 2019-04-02 - Earliest claimed: 2013-10-08 - Assignees: Applied Medical Technology, Inc. - Applicants: Applied Medical Technology, Inc. - Inventors: Grant Wesley Phillips; Derek M. Williams; Kathleen Walsh; George J. Picha - Web page: https://patentgrep.com/patent/US10245021B2 ## CPC - A61B 17/0469: {Suturing instruments for use in minimally invasive surgery, e.g. endoscopic surgery} - A61B 17/06166: {Sutures (suture materials A61L17/00; manufacture of artificial threads D01D; treatment of threads D06M)} - A61B 17/0482: {Needle or suture guides (guides for drills, pins or wire A61B17/17; guides for puncturing needles A61B17/3403)} - A61B 2017/00818: {Treatment of the gastro-intestinal system} - A61B 2017/00876: {magnetic} - A61B 2017/0472: {Multiple-needled, e.g. double-needled, instruments} - A61B 2017/2845: {with a spring pushing the handle back} - A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D) ## Abstract A suturing device is made of two hypodermic needles allowing one or more sutures (at the same time) and a retrieval probe to be advanced into a cavity (e.g., a stomach cavity) of the patient. Both the suture and retrieval probes comprise magnets of opposite polarities on their leading ends. Thus, after the suture and retrieval probe are inside the stomach cavity, the suture and retrieval probe may mate and the suture may be transferred from one hypodermic needle to the other using magnetic attraction. In doing so, the suture forms a loop through the stomach. Once removed, this loop, having two ends that are positioned outside the patient's body, can be pulled tight in order to pull the stomach wall closer to the surface of the patient's body. With the stomach wall close to the surface of the patient's body, it is easier to insert a gastrostomy device. ## Claims ### Claim 1 A suturing device comprising: a first and second hypodermic needle; one or more sutures comprising a magnetic tip at an end of the one or more sutures and being at least partially disposed in a cavity of the first hypodermic needle; a magnetic retrieving probe comprising a magnetic tip and being at least partially disposed in a cavity of the second hypodermic needle; and a suture advancement component having a cannula, the suture advancement component being at least partially disposed in the cavity of the first hypodermic needle, the one or more sutures being at least partially disposed in the cannula, wherein the diameter of the magnetic tip of the one or more sutures is greater than an inner diameter of the cannula, and wherein the magnetic tip of the one or more sutures and the magnetic tip of the magnetic retrieving probe have opposite polarities. ### Claim 2 (depends on 1) The suturing device of claim 1, wherein: the suture advancement component is attached to a first top plate, the top plate also being attached to a center rod, and the magnetic retrieving probe is attached to a second top plate such that the one or more sutures is threaded through the cannula between the first top plate of the suture advancement component and the second top plate of the magnetic retrieving probe. ### Claim 3 (depends on 2) The suturing device of claim 2, further comprising a stabilization hub comprising three parallel bores, wherein the first and second hypodermic needles each pass through one of the three bores, and the center rod passes into a third bore, the center rod in the third bore having a tensioning component. ### Claim 4 (depends on 3) The suturing device of claim 3, further comprising an anti-splay component comprising two parallel bores, wherein the first and second hypodermic needles each pass through one of the two parallel bores and the anti-splay component is configured to keep the first and second hypodermic needles parallel as they pass through a patient's tissues. ### Claim 5 (depends on 3) The suturing device of claim 3, wherein the tensioning component is an O-ring or a spring. ### Claim 6 (depends on 1) The suturing device of claim 1, wherein the one or more sutures comprises a lead suture attached to first and second sutures, the lead suture also being connected to the magnetic tip. ### Claim 7 (depends on 1) The suturing device of claim 1, wherein the one or more sutures is two sutures and the two sutures share the same magnetic tip in order to create a double suture in a patient. ### Claim 8 (depends on 1) The suturing device of claim 1, wherein the magnetic retrieving probe is naturally biased at the magnetic tip, the natural bias being relative to the hypodermic needle such that the natural bias causes the magnetic tip to form a curved portion relative to the hypodermic needle at its leading end when not disposed in the cavity of the second hypodermic needle. ### Claim 9 A suturing device comprising: a first and second hypodermic needle; one or more sutures comprising a magnetic tip at an end of the one or more sutures and being at least partially disposed in a cavity of the first hypodermic needle; and a magnetic retrieving probe comprising a magnetic tip and being at least partially disposed in a cavity of the second hypodermic needle; and a suture advancement component having a cannula, the suture advancement component being at last partially disposed in the cavity of the first hypodermic needle, the one or more sutures being at least partially disposed in the cannula, wherein the diameter of the magnetic tip of the one or more sutures is greater than an inner diameter of the cannula, and wherein the magnetic tip of the one or more sutures and the magnetic tip of the magnetic retrieving probe have opposite polarities, and wherein the magnetic tips of the one or more sutures and the magnetic retrieving probe are located within the cavities of the first and second hypodermic needles, respectively, wherein the magnetic tip of the magnetic retrieving probe is located closer to a leading end of the second hypodermic needle than the magnetic tip of the one or more sutures in the first hypodermic needle. ### Claim 10 (depends on 9) The suturing device of claim 9, wherein: the suture advancement component is attached to a first top plate, the top plate also being attached to a center rod, and the magnetic retrieving probe is attached to a second top plate such that the one or more sutures is threaded through the cannula between the first top plate of the suture advancement component and the second top plate of the magnetic retrieving probe. ### Claim 11 (depends on 10) The suturing device of claim 10, further comprising a stabilization hub comprising three parallel bores, wherein the first and second hypodermic needles each pass through one of the three bores, and the center rod passes into a third bore, the center rod in the third bore having a tensioning component. ### Claim 12 (depends on 11) The suturing device of claim 11, further comprising an anti-splay component comprising two parallel bores, wherein the first and second hypodermic needles each pass through one of the two parallel bores and the anti-splay component is configured to keep the first and second hypodermic needles parallel as they pass through a patient's tissues. ### Claim 13 (depends on 11) The suturing device of claim 11, wherein the tensioning component is an O-ring or a spring. ### Claim 14 (depends on 9) The suturing device of claim 9, wherein the one or more sutures comprises a lead suture attached to first and second sutures, the lead suture also being connected to the magnetic tip. ### Claim 15 (depends on 9) The suturing device of claim 9, wherein the one or more sutures is two sutures and the two sutures share the same magnetic tip in order to create a double suture in a patient. ### Claim 16 (depends on 9) The suturing device of claim 9, wherein the suture advancement component is configured to advance the magnetic retrieving probe and the at least one suture through the first hypodermic needle and the second hypodermic needle, respectively, together and at the same rate. ### Claim 17 (depends on 1) A method for suturing comprising the steps of: providing the suturing device of claim 1; inserting the first and second hypodermic needle through a patient's skin into a cavity of the patient's body; depressing the magnetic retrieving probe comprising the magnetic tip through the second hypodermic needle; depressing the one or more sutures comprising the magnetic tip through the first hypodermic needle; retracting the magnetic retrieval probe through the second hypodermic needle such that the one or more sutures are pulled into the cavity of the patient's body through the first hypodermic needle and out of the cavity of the patient's body through the second hypodermic needle; and retracting the first and second hypodermic needles. ### Claim 18 (depends on 17) The method for suturing of claim 17, wherein the steps of depressing the magnetic retrieving probe and depressing the at least one suture are carried out at the same time. ### Claim 19 (depends on 17) The method for suturing of claim 17, wherein the step of depressing the at least one suture is carried out by depressing a suture advancement component having a cannula, the at least one suture being located at least partially within the cannula, and the diameter of the magnetic tip of the at least one suture being greater than the inner diameter of the cannula.