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Suture having a restraining element at an end and method and use thereof

A suture and coil technology, applied in the field of self-retaining suture devices, can solve problems such as low-efficiency processing, ineffectiveness, loss of matrix fiber strength, etc.

Active Publication Date: 2017-09-29
伊西康有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method of preparation requires the addition of minor components to the matrix fiber under molten conditions, and thermal exposure to molten polymer can result in a loss of strength in the matrix fiber due to elevated temperature exposure
[0009] While the aforementioned publications have attempted to improve sutures by preparing end effectors, various attempts have been ineffective, inefficient or have created processing difficulties

Method used

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  • Suture having a restraining element at an end and method and use thereof
  • Suture having a restraining element at an end and method and use thereof
  • Suture having a restraining element at an end and method and use thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0111] The welding die was constructed as a 0.133" diameter horn tip. The inner surface of the horn tip was fabricated with a flat rim surface of 0.010" width and a spherical concave surface of 0.125" diameter. The horn design Set on a 20kHz Branson welder. The unit was set to a fixed stop at 0.018". The weld pressure was set at 20 psi and the trigger pressure was set at 20 lbf. A 0.6 ratio step-down was used with the ultrasonic horn and the amplitude was set at 75%. The welder was set to weld at the energy imparted during the cycle and set to stop at an energy of 2.0J. The machine descending speed is set to 60.

[0112] Polydioxanone (PDS) 2 / 0 cylindrical fibers were utilized. Approximately 3.25" of fiber was wound into the jig and the welding cycle was initiated. The strength of the terminal attachment was measured using an Instron unit with a grooved metal clamp holding the terminated end of the fiber. The fiber was pulled until the terminal disengaged from the fiber . ...

Embodiment 2

[0116] The ultrasonic horn was set on a 20kHz Branson welder. The unit was set with a fixed stop at 0.018". Weld pressure was set at 25 psi and trigger pressure was set at 20 lbf. A 0.6 ratio pressure reducer was used with the ultrasonic horn and the amplitude setting At 70%. The welder was set to weld at the energy imparted during the cycle and set to stop at an energy of 2.1 J. The machine descent speed was set to 50.

[0117] Polydioxanone (PDS) 2 / 0 cylindrical fibers were utilized. Approximately 3.25" of fiber was wound into the jig and the welding cycle was initiated. The strength of the terminal attachment was measured using an Instron unit with a grooved metal clamp holding the terminated end of the fiber. The fiber was pulled until the terminal disengaged from the fiber .

[0118] Test results can be found at Figure 28 And it is reflected in Table 1 below:

[0119]

[0120] In both Example 1 and Example 2, the average terminal strength exceeded the USP knot ten...

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PUM

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Abstract

The invention provides a suture having a restraining element at an end and a method and use thereof. According to the invention, polymeric fibers, and apparatuses for and methods of processing such fibers to be useful as sutures are provided, where at least one end of a fiber includes a termination feature. The termination feature is formed through the application of energy to a coiled region of the fiber.

Description

technical field [0001] The present invention relates generally to methods of making features on polymeric fibers, and more particularly to methods of making features on the non-needling ends of surgical suture devices by applying energy, radiofrequency, heat, or ultrasonic energy. More specifically, the suture device is a self-retaining suture device. The invention also relates to such devices and methods of using the devices. Background technique [0002] Various surgical procedures employing sutures have been used in the past to close or bandage wounds in human or animal tissue such as skin, muscle, tendons, internal organs, nerves, blood vessels, and the like. More specifically, a surgeon may use a surgical needle with an attached conventional suture (which may be a smooth monofilament, or may be multifilament) to alternately pierce tissue on opposite sides of the wound to suture closed sutures. trauma. Whether the trauma is accidental or surgical, loop suture is a com...

Claims

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Application Information

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IPC IPC(8): A61B17/04
CPCA61B17/0401A61B2017/0404A61B2017/00526A61B17/06166D02J3/02A61B2017/06176
Inventor D.C.老林德R.A.劳斯塞奥D.J.林德
Owner 伊西康有限责任公司
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