Magnetic Stapling Devices and Delivery Systems

A technology of magnets and rings, applied in the field of forming anastomosis, can solve the problems of intermediate tissue damage, injury, increased leakage, etc.

Active Publication Date: 2022-03-08
维兰德.K.沙马
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Prior art devices for forming anastomoses often include a piercing tip, which is dangerous and can cause damage to adjacent organs
Surgical instruments often use difficult gripping mechanisms
Further, the operation of some prior art surgical instruments requires two punctures, which increases the possibility of leakage from the puncture site via the grasper
Also, some prior art devices can only be placed near adjacent walls without sufficient pressure to cause damage and necrosis of the intervening tissue to thereby form a sufficiently large anastomosis that will remain in place for a long time to provide adequate drainage

Method used

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  • Magnetic Stapling Devices and Delivery Systems
  • Magnetic Stapling Devices and Delivery Systems
  • Magnetic Stapling Devices and Delivery Systems

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0308] Situation Example 1: Device with one coil loop on each side of the anastomosis

[0309] Figure 39C is a graph showing the relationship between the distance between coil loops and pressing pressure provided by an anastomotic device having a single coil loop on each side of an anastomotic portion to be formed according to an embodiment of the present specification. in other words, Figure 39C Each of the devices shown includes a total pair of coil loops comprising a single coil loop on each side of the anastomosis to be formed. Curves 3910, 3911 and 3912 show the relationship between the distance between the coil turns and the pressure for a device having 1 pair of coil turns, an inner coil radius of 10 mm, and a magnet width or diameter of 2.0 mm, respectively. 2.5mm and 3.0mm. Normal peristaltic properties of the gastrointestinal tract are assumed to produce a maximum gastric pressure 3913 of about 7.25 psi (0.05 MPa) and a maximum small bowel pressure 3914 of abo...

example 2

[0312] Situation Example 2: Device with two coil loops on each side of the anastomosis

[0313] Figure 39D is a graph showing the relationship between the distance between coil loops and pressing pressure provided by an anastomotic device having two coil loops on each side of an anastomotic portion to be formed according to an embodiment of the present specification. in other words, Figure 39D Each device shown includes a total of two pairs of coil loops, each pair comprising a single coil on each side of the anastomosis to be formed for a total of 4 loops. Curves 3920, 3921 and 3922 show the relationship between distance between coil turns and pressure for a device having 2 pairs of coil turns, an inner coil radius of 10mm, and a magnet width or diameter of 2.0mm, 2.5mm and 3.0mm. Normal peristaltic properties of the gastrointestinal tract are assumed to produce a maximum gastric pressure 3923 of approximately 7.25 psi (0.05 MPa) and a maximum small intestinal pressure...

example 3

[0315] Situation Example 3: Device with Three Coil Loops on Each Side of the Anastomosis

[0316] Figure 39E is a graph showing the relationship between the distance between coil loops and pressing pressure provided by an anastomotic device having three coil loops on each side of an anastomotic portion to be formed according to an embodiment of the present specification. in other words, Figure 39E Each device shown includes a total of three pairs of coil loops, each pair comprising a single coil on each side of the anastomosis to be formed for a total of 6 loops. Curves 3930, 3931 and 3932 show the relationship between distance between coil turns and pressure for a device having 3 pairs of coil turns, an inner coil radius of 10mm, and a magnet width or diameter of 2.0mm, 2.5mm and 3.0mm. Normal peristaltic properties of the gastrointestinal tract are assumed to produce a maximum gastric pressure 3933 of approximately 7.25 psi (0.05 MPa) and a maximum small intestinal pr...

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PUM

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Abstract

The stapling device includes a magnet coupled to a wire capable of changing shape from a straight wire to a coil when deployed in the body. The coil exerts a compressive force on the layers of tissue caught between the loops of the coil. The compressive force is enhanced by the attractive force between the magnets coupled to the adjacent loops of the coil and causes the coil to cut through the layers of tissue, forming an anastomosis. One end of the wire is preferably provided with a connection member, such as a screw or a nut, for connection with the delivery device.

Description

[0001] cross reference [0002] This specification relies on U.S. Provisional Patent Application No. 62 / 425,951, filed November 23, 2016, entitled "Anastomosis Device and Delivery System," U.S. Patent Application No. 62 / 425,951, filed October 16, 2016, Provisional Patent Application No. 62 / 408,795, and U.S. Provisional Patent Application No. 62 / 366,185, filed July 25, 2016, entitled "Anastomosis Device and Delivery System," all of which are incorporated herein by reference in their entirety . technical field [0003] The present description relates to forming anastomosis in the human body, and more particularly to devices for an efficient anastomotic delivery system for placing the device at a desired location in the human body. Background technique [0004] Worldwide, the number of people diagnosed with gallstones is increasing. Each year, more than one million Americans are diagnosed with gallstones, and another 200 million already have the condition. This condition can...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B17/08A61B17/11
CPCA61B17/1114A61B2017/00867A61B2017/00876A61M27/002A61B2017/1135A61B2017/1139A61B17/11A61B17/122A61B17/1227A61B2017/00243A61B2017/00247A61B2017/0034A61B2017/00477A61B2017/00783A61B2017/0649A61B2017/1107
Inventor 维兰德.K.沙马
Owner 维兰德.K.沙马
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