Backup kit for a patient-specific arthroplasty kit assembly

Abstract

A method for preparing a backup kit for a plurality of patient-specific arthroplasty procedures scheduled at the same medical facility includes providing a database with data from completed arthroplasty procedures using patient-specific arthroplasty kits. The database includes comparisons between preoperatively planned implant size and intraoperatively implanted implant size. The method includes determining a statistically expected implant size deviation from a planned implant size for each implant included in a plurality of patient-specific arthroplasty kits prepared for a shipment to the medical facility using the database. A backup kit of backup implants is assembled for the shipment. The number and size of the backup implants is determined from the statistically expected implant size deviations.

1 . A method for preparing a backup kit for a plurality of patient-specific arthroplasty procedures scheduled at the same medical facility comprising:
 providing a database having data from completed arthroplasty procedures using patient-specific arthroplasty kits, the database including comparisons between preoperatively planned implant sizes and intraoperatively implanted implant sizes;   determining a statistically expected implant size deviation from a planned implant size for each implant included in a plurality of patient-specific arthroplasty kits prepared for a shipment to the medical facility using the database; and   assembling a backup kit of backup implants for the shipment, wherein the number and size of the backup implants is determined from the statistically expected implant size deviations.   
     
     
         2 . The method of  claim 1 , further comprising updating the database with intraoperatively implanted implant size for each patient-specific arthroplasty kit after a corresponding arthroplasty procedure is completed. 
     
     
         3 . The method of  claim 1 , further comprising assembling the plurality of patient-specific arthroplasty kits for the medical facility. 
     
     
         4 . The method of  claim 3 , further comprising including in each patient-specific arthroplasty kit a patient-specific alignment guide. 
     
     
         5 . The method of  claim 4 , further comprising including in each patient-specific arthroplasty kit a non-custom implant. 
     
     
         6 . The method of  claim 1 , wherein the size of at least one backup implant differs by a size interval of  2 . 5  mm from the planned implant size. 
     
     
         7 . The method of  claim 1 , wherein the backup kit includes knee implants. 
     
     
         8 . The method of  claim 1 , wherein the planned period of time is a single day. 
     
     
         9 . The method of  claim 1 , wherein the planned period of time is a single week. 
     
     
         10 . A method for preparing a backup kit for a plurality of patient-specific arthroplasty procedures scheduled at the same medical facility comprising:
 assembling a shipment of a plurality of patient-specific arthroplasty kits scheduled for arthroplasty procedures at the same medical facility within a planned period of time, each arthroplasty kit including a patient-specific alignment guide and a non-custom implant;   accessing a database of completed arthroplasty procedures using patient-specific arthroplasty kits, the database indicating deviations between preoperatively planned implant sizes and intraoperatively implanted implant sizes;   determining from the database a statistically expected size deviation for each implant size in the shipment; and   assembling a backup kit of backup implants for the shipment, the number and size of the backup implants included in the backup kit determined from the statistically expected implant size deviations.   
     
     
         11 . The method of  claim 10 , wherein the backup kit includes knee implants. 
     
     
         12 . The method of  claim 10 , wherein each patient-specific arthroplasty kit in the shipment includes a patient-specific femoral alignment guide. 
     
     
         13 . The method of  claim 12 , wherein each patient-specific arthroplasty kit in the shipment includes a patient-specific tibial alignment guide. 
     
     
         14 . The method of  claim 13 , wherein each patient-specific arthroplasty kit in the shipment includes a non-custom knee femoral and a non-custom knee tibial implant. 
     
     
         15 - 24 . (canceled)