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EP-4238512-B1 - MEDICAL KIT COMPRISING A DRILL AND A DEBRIS COLLECTOR

EP4238512B1EP 4238512 B1EP4238512 B1EP 4238512B1EP-4238512-B1

Inventors

  • FIERLBECK, JOHANN
  • Krieghofer, Michael

Dates

Publication Date
20260506
Application Date
20220301

Claims (15)

  1. A medical kit (2) for use with a drilling device (13), the kit (2) comprising a drill (4) and a medical debris collector (6), the debris collector (6) comprising a container (14), wherein the container (14) comprises a first compartment (16) at least partially filled with a collecting agent (20), the first compartment (14) and collecting agent (16) being configured for at least partially enclosing the drill (4) to thereby collect drilling debris (9) in the container (14) and the collecting agent (20) during a drilling process, wherein the collecting agent has a viscosity of 10,000-3,000,000 mPas.
  2. The kit (2) of claim 1, wherein the container (14) comprises a second compartment (28), wherein the second compartment (28) is configured for providing a cooling agent (30) for the drilling process, optionally wherein the second compartment (28) is an elongate lumen.
  3. The kit (2) of claim 1 or 2, wherein - the container (14) and the collecting agent (20) are configured for enclosing at least a portion of a working section (8) of the drill (4); and/or - the container (14) is configured such that the drill (4) traverses the collecting agent (20) during a drilling process, preferably wherein the drill (4) is at least partially in contact with the collecting agent (20) during a drilling process.
  4. The kit (2) of claim 3, wherein a. the container (14) comprises the distal opening (26) located at a distal portion of the first compartment (16), wherein the container (14) is configured to house at least the portion of the working section (8) of the drill (4) within the first compartment (16) such that a distal tip (4c) of the drill (4) may contact a workpiece (7) at the distal opening (26) and/or distal of the distal opening (26), wherein the distal opening (26) is optionally closed with a removable closure (50) before insertion of the drill (4) into the distal opening (26) and configured to be opened by removing the removable closure (50); or b. the first compartment (16) comprises a distal portion, wherein the distal portion is configured for being drilled through by the drill (4).
  5. The kit (2) of claim 3 or 4, wherein the container (14) comprises the proximal opening (24) located at a proximal portion of the first compartment (16), wherein the container (14) is configured to house at least the portion of the working section (8) of the drill (4) within the first compartment (16) such that a proximal portion of the drill (4) extends proximally from the proximal opening (24), preferably wherein the proximal opening (24) is proximal of the working section (8).
  6. The kit (2) of any one of claims 2-5, wherein the container (14) comprises at least one outlet (34) in fluid communication with the second compartment (28) and an exterior of the debris collector (6), the debris collector (6) being configured to provide the cooling agent (20) to a drilling zone of a workpiece (7) during a drilling process via the outlet (34); preferably wherein the outlet (34) is located in a distal region of the container (14).
  7. The kit (2) of any one of the preceding claims, wherein the collecting agent (20) is a gel, preferably a surgical gel and/or an ultrasound gel and/or a catheter gel; and/or wherein the collecting agent (20) is configured for use in a human and/or animal body, preferably non-toxic to the human and/or animal body.
  8. The kit (2) of any one of the preceding claims, wherein - at least 1/4, preferably at least 1/3 of the volume of the first compartment (16) is filled with the collecting agent (20); and/or - in the upright orientation, a filling level of the collecting agent (20) in the first compartment (16) is 2d, wherein d is the diameter (d) of the drill (4).
  9. The kit (2) of any one of the preceding claims, wherein the debris collector (6) is adapted for relative rotation between the container (14) and the drill (4); and/or wherein the container (14) is configured to move along a longitudinal axis (LD) of and relative to the drill (4) during a drilling process.
  10. The kit (2) of any one of the preceding claims, wherein the container (14) is intrinsically and/or extrinsically rigid, and optionally wherein the container (14) is free of rubber.
  11. The kit (2) of any one of the preceding claims, wherein the drill (4) comprises a non-working section (10), e.g. a shank, and wherein the container (14) includes a drill guide (44), wherein the drill guide (44) is configured to be located at the non-working section (10).
  12. The kit (2) of any one of the preceding claims, wherein the drill (4) is a drill (4) for surgical screw removal and/or a carbide drill (4) and/ or a HSS drill (4).
  13. The kit (2) of any one of the previous claims, wherein the container (14) has an outer diameter (D)of 18mm or less, and/or at least 10mm.
  14. The kit (2) of any one of claims 4-13, wherein the container's distal portion has a distally tapering shape, e.g. a cone like shape.
  15. The kit (2) of any one of the preceding claims, wherein the container (14) comprises a material that is configured for shape adaption at a temperature T in a range of 100°C-200°C, 110°C - 190°C, 120°C - 180°C, 140°C-160°C, 110°C - 130°C, 150°C - 170°C, and/or 170°C - 190°C particularly at T = 120°C, T = 160°C, or T = 180°C, e.g. a thermoplastic, e.g. polypropylene and/or polyethylene.

Description

The present invention relates to a medical kit comprising a drill and a debris collector. Also disclosed herein is a method of assembling a drill and a debris collector according to the invention with a drilling device and a method of performing a surgical screw head removal procedure, Nowadays, implant removal is a common surgical procedure. Implants are often fixed to the bones of patients with implant screws. Accordingly, during an implant removal procedure, a surgeon needs to loosen and remove the implant screws in order to be able to remove the implant. However, during this procedure, the surgeon has to deal with damaged screw heads and cold welded screw-plate interfaces. In some cases, it is not possible to use standard implant removal screw drivers to remove such screws. Instead, the surgeon needs to drill out the screw head and/or the whole screw using a drilling device and a drill. During the drilling process, drilling debris is created. As the screws and implants are usually made from metal and/or metal alloys, it is necessary to avoid the situation that drilling debris enters the patient's body - or at least ensure a reduction of the amount of drilling debris entering the body as far as possible. Current techniques focus on rinsing the working zone, e.g., with physiological NaCl solution and aspirating the drilling debris together with the salt solution. However, these techniques have several drawbacks. As the surgeon is occupied with drilling out the screw, a second person is required to do the rinsing and aspiration of the debris, which makes the procedure more complicated. The drilling process itself is more of a punctual nature, but the rinsing and aspiration tend to distribute the particles in a 3-dimensional way. Moreover, depending on the skills of the person doing the rinsing and aspiration, a certain amount of drilling debris may still enter the patient's body and can cause health risks. WO 97/16118 A1 discloses an instrument for collection of cuttings, comprising: a tip adapted for use with a cutting tool; and a collection chamber attachable to the tip for collecting and holding cuttings; wherein when the instrument is fitted with a cutting tool, the instrument allows cutting tool rotation and translation; and when in use, cuttings accumulate in the collection chamber. The instrument may comprise a wiper. US 2010/0298835 A1 relates to an apparatus for collecting particulate bone, from a bone having a bone surface, for use in combination with a bone cutting or drilling tool during an osteotomy or bone drilling procedure, the bone cutting or drilling tool having a distal end with a bone cutting or drilling element extending distally therefrom, the bone cutting or drilling element having a diameter, comprising a collection module having a proximal end and a distal end, the collection module comprising a housing having an inner wall having distal and proximal ends, an outer wall coaxially disposed around the inner wall and spaced therefrom and having a distal end extending distally from the distal end of the inner wall, and an end wall affixed to and capping the distal end of the outer wall, the inner wall being sized for sealing and removable engagement of the proximal end of the collection module with the distal end of the bone cutting or drilling tool, the end wall having a slot therethrough sufficiently larger than the diameter of the bone cutting or drilling element to permit the bone cutting or drilling element to extend therethrough and to allow suctioning through the slot of bone particulate from an operating site, a suction channel disposed between the inner wall and the outer wall and in suctioning communication with the slot, and a flexible portion disposed around the housing having proximal and distal ends, the proximal end being affixed to the proximal end of the outer wall and the distal end extending distally from the end wall, the distal end of the flexible portion comprising an open cylindrical tube; the flexible portion of the collection module allowing the open distal end of the cylindrical tube to follow irregularities in the bone surface when the collection module is in sealing engagement with the distal end of the bone cutting or drilling tool. It is an object of the present invention to provide improved tool accessories for improving implant removal procedures. This and other objects are achieved with the claimed invention as recited in the claims. The invention is defined by the features of the independent claim. The present invention relates to a medical kit for use with a drilling device, the kit comprising a drill and a medical debris collector, the debris collector comprising a container, wherein the container comprises a first compartment at least partially filled with a collecting agent, the first compartment and collecting agent being configured for at least partially enclosing the drill to thereby collect drilling debris in the container and the collecting ag