Delivery and assessment aids for implants

A treatment system comprising:

• a plurality of inserts, each insert differing from in at least one of length and diameter, that is resiliently deflectable, the insert extending between a tip portion and a control portion, with a body portion located between the tip portion and the control portion, the tip portion and the body portion combining to define an insert length of the insert, the tip portion of the insert being configured to be coupled to the trailing portion of an implant;
• and
• a guide tube having an internal lumen, the guide tube being configured to permit passage of the tip portion and the body portion through the guide tube, the guide tube having a guide tube length that is less than the insert length and the guide tube being more flexible than the body portion of the insert.

A treatment system comprising:

• a plurality of inserts each having at least one of a different diameter, length, and curvature than another one of the plurality of inserts, each insert being resiliently deflectable and extending between a tip portion and a control portion, with a body portion located between the tip portion and the control portion, the tip portion and the body portion combining to define an insert length, the tip portion being configured to be coupled to the trailing portion of an implant.

A method of treating a patient, the method comprising:

• sizing a fistula using an insert that is resiliently deflectable and extends between a tip portion and a control portion, with a body portion located between the tip portion and the control portion, the tip portion and the body portion combining to define an insert length, sizing the fistula including inserting the insert into a fistula to make an assessment of the fit of the insert in the fistula.