One step dental implant delivery system

• US 6,416,324 B1
• Filed: 12/10/1999
• Issued: 07/09/2002
• Est. Priority Date: 12/10/1999
• Status: Expired due to Term

• Current Assignee: Zimmer Dental Inc. (Zimvie Incorporated)
• Original Assignee: Sulzer Dental Incorporated
• Inventors: Day, Thomas H.
• Primary Examiner(s): Lucchesi, Nicholas D.
• Application Number:
  US09/458,414
• Time in Patent Office: 942 Days
• Field of Search: 432/172, 432/173, 432/174
• US Class Current: 433/173
• CPC Class Codes: A61C 8/008 Healing caps or the like
• CPC Class Codes: A61C 8/0087 Means for sterile storage or manipulation of dental implants
• CPC Class Codes: A61C 8/0089 Implanting tools or instruments

Abstract

A dental implant healing screw formed from two pieces: a threaded shaft and a collar. The healing screw functions as a conventional healing cap to protect the coronal end of the dental implant and as a driver to drive the dental implant during the implantation procedure.

Claims

1. A dental implant system, comprising:

a dental implant having a coronal end with an engaging feature and a threaded internal bore;

a healing screw having two separate and distinct components, including a shaft and a collar;

the shaft having an elongated cylindrical configuration, a proximal end with an engaging feature, a smooth outer surface portion, a distal end with external threads, a lip that extends around the proximal end of the shaft and a shoulder;

the collar having a cylindrical shape with a central opening extending through the collar, a proximal end with a first engaging region, and a distal end with a second engaging region; and

wherein the distal end of the shaft extends through the central opening of the collar, the collar is connected to the smooth outer surface portion of the shaft, the shaft rotates within the central opening while the second engaging region of the collar remains engaged with the engaging feature of the implant, the lip abuts against the proximal end of the collar, and the shoulder abuts against the distal end of the collar.

2. The dental implant system of claim 1 in which the smooth outer surface portion extends between the shoulder and the lip.

3. The dental implant system of claim 1 in which the shoulder and the lip retain the collar around the shaft.

4. The dental implant system of claim 1 in which the shaft rotates within the central opening while the external threads of the shaft thread into the threaded internal bore of the implant.

5. The dental implant system of claim 1 in which the engaging feature of the implant is a male hexagonal projection, and the second engaging region of the collar is a female hexagonal recess that engages the male hexagonal projection.

6. The dental implant system of claim 1 in which the engaging feature of the implant is a plurality of male tine projections, and the second engaging region of the collar is a plurality of recesses that engage the male tine projections.

7. The dental implant system of claim 1 in which the shaft is made of titanium and the collar is made from a polymer.

8. The dental implant system of claim 1 in which the collar is injection molded around the shaft.

9. The dental implant system of claim 1 in which the engaging feature of the shaft includes a multi-sided recess.

10. The dental implant system of claim 9 in which the multi-sided recess, has a hexagonal shape.

11. The dental implant system of claim 1 in which the external threads of the shaft have a diameter that is smaller than the diameter of the central opening of the collar.

12. The dental implant system of claim 1 in which the second engaging region of the collar engages the engaging feature of the implant while the implant is driven into a jawbone.

13. The dental implant system of claim 12 in which the second engaging region transfers torque to the engaging feature.

14. The dental implant system of claim 1 in which the healing screw seals the internal bore of the implant.

15. A method for implanting a self-tapping dental implant and a dental healing screw into a jawbone of a patient, comprising the steps of:

providing the dental implant with a coronal end having an engaging feature and a threaded axial bore;

providing the healing screw with a shaft and a collar, the collar having a first engaging region at a proximal end and a second engaging region at a distal end and a central opening, the shaft extending through the central opening and having an external threads;

providing a dental driving tool having a distal end with an engagement feature;

engaging the second engaging region of the collar with the engaging feature of the implant;

rotating the shaft to threadably engage the external threads with the threaded axial bore of the implant;

cutting gingival tissue of the patient to expose the jawbone;

forming a hole into the jawbone;

engaging the engagement feature of the driving tool with the first engaging region of the collar;

transporting the implant and healing screw connected to the driving tool to the jawbone;

positioning a distal end of the implant into the hole;

driving the implant with the driving tool into the hole until the implant is fully seated in the hole;

removing the engagement feature of the driving tool from the first engaging region of the collar; and

covering the implant and healing screw with the gingival tissue.

16. A method for connecting a dental healing screw to a dental implant, comprising the steps of:

providing the dental implant with a coronal end having an engaging feature and a threaded axial bore;

providing the healing screw with a shaft made of titanium and a collar made of polymer, the collar having a engaging region at a distal end and a central opening, the shaft extending through the central opening and having an external threads;

engaging the engaging region of the collar with the engaging feature of the Implant; and

rotating the shaft within the central opening to threadably engage the external threads of the shaft with the threaded axial bore of the implant.

17. The method of claim 16 further comprising the steps of:

providing a dental tool with having a distal end with an engagement feature;

providing the shaft including a proximal end with an axial bore having a tool engaging surface;

engaging the engagement feature with the tool engaging surface; and

rotating the dental tool to perform the step of rotating the shaft within the central opening.

18. A method for implanting a self-tapping dental implant and a dental healing screw into a jawbone of a patient, comprising the steps of:

providing the dental implant with a coronal end having an engaging feature and a threaded axial bore;

providing the healing screw with a shaft and a collar, the collar having a first engaging region at a proximal end and a second engaging region at a distal end and a central opening, the shaft extending through the central opening and having an external threads;

providing a dental driving tool having a distal end with an engagement feature;

connecting the healing screw to the implant with the second engaging region of the collar directly engaged with the engaging feature of the implant;

cutting gingivial tissue of the patient to expose the jawbone;

forming a hole into the jawbone;

engaging the engagement feature of the driving tool directly with the first engaging region of the collar;

positioning a distal end of the implant at the hole;

driving the implant with the driving tool into the hole until the implant is fully seated in the hole;

removing the engagement feature of the driving tool from the first engaging region of the collar; and

covering the implant and healing screw with the gingival tissue.

19. A method for implanting a dental implant and a dental healing screw into a jawbone of a patient, comprising the steps of:

providing the dental implant with a coronal end having an axial bore;

providing the healing screw with a metallic shaft and a polymeric collar, the collar having an engaging region at a proximal end and a central opening, the shaft extending through the central opening;

providing a dental driving tool having a distal end with an engagement feature;

connecting the healing screw to the coronal end of the implant to seal the axial bore of the implant;

cutting gingivial tissue of the patient to expose the jawbone;

forming a hole into the jawbone;

engaging the engagement feature of the driving tool directly with the engaging region of the collar;

driving the implant with the driving tool into the hole;

removing the engagement feature of the driving tool from the engaging region of the collar; and

covering the implant and healing screw with the gingival tissue

20. A method for implanting a self-tapping dental implant and a dental healing screw into a jawbone of a patient, comprising the steps of:

providing the dental implant with a coronal end connected to and engaged with the healing screw, the healing screw having a proximal end with an engaging region;

providing a dental driving tool having a distal end with an engagement feature;

drilling a hole into the jawbone of the patient;

connecting the engagement feature of the driving tool directly with the engaging region of the healing screw;

transporting the implant, healing screw, and driving tool to the jawbone;

driving the implant into the hole with the driving tool until the implant is fully seated in the hole; and

removing the engagement feature of the driving tool from the engaging region of the healing screw.

21. A dental implant system, comprising:

a dental implant having a coronal end with an engaging feature and a threaded internal bore;

a healing screw having two separate and distinct components, including a shaft made of titanium and a collar made of polymer;

the shaft having an elongated cylindrical configuration, a proximal end with an engaging feature, a smooth outer surface portion, and a distal end with external threads;

the collar having a cylindrical shape with a central opening extending through the collar, a proximal end with a first engaging region, and a distal end with a second engaging region; and

wherein the distal end of the shaft extends through the central opening of the collar, the collar is connected to the smooth outer surface portion of the shaft, the shaft rotates within the central opening while the second engaging region of the collar remains engaged with the engaging feature of the implant.

22. The dental implant system of claim 21 in which the second engaging region of the collar engages the engaging feature of the implant to fully seat and drive the implant into a jawbone.

23. The dental implant system of claim 22 in which the second engaging region transfers torque directly to the engaging feature.

24. The dental implant system of claim 21 in which the healing screw seals the internal bore of the implant.