Trocar system having a drive

• US 10,172,604 B2
• Filed: 02/27/2014
• Issued: 01/08/2019
• Est. Priority Date: 10/21/2011
• Status: Active Grant

• Current Assignee: Synergetics Incorporated
• Original Assignee: Synergetics Incorporated
• Inventors: Hanlon, Matthew A., LaConte, Matthew
• Primary Examiner(s): Hall, Deanna K
• Application Number:
  US14/192,379
• Publication Number:
  US 20140180013A1
• Time in Patent Office: 1,776 Days
• CPC Class Codes: A61B 17/0218 for minimally invasive surgery A61B17/0281, A61B17/0469, A61B17/12013, A61B17/1285, A61B17/29, A61B17/320016 take precedence
• CPC Class Codes: A61B 17/3415 for introducing tubes or catheters, e.g. gastrostomy tubes, drain catheters A61B17/3417 takes precedence; body piercing catheter guide needles A61M25/06
• CPC Class Codes: A61B 17/3417 Details of tips or shafts, e.g. grooves, expandable, bendable; Multiple coaxial sliding cannulas, e.g. for dilating syringe needles A61M5/32; dilators A61M29/00
• CPC Class Codes: A61B 17/3421 Cannulas
• CPC Class Codes: A61B 17/3468 for implanting or removing devices, e.g. prostheses, implants, seeds, wires devices for implanting seeds A61M37/0069
• CPC Class Codes: A61B 2017/00362 Packages or dispensers for MIS instruments A61B2017/0479 takes precedence
• CPC Class Codes: A61B 2017/3405 using mechanical guide means
• CPC Class Codes: A61F 9/00736 Instruments for removal of intra-ocular material or intra-ocular injection, e.g. cataract instruments A61F9/008 takes precedence

Abstract

Systems and methods for using a trocar system are disclosed. The system generally includes a handle having a first end a second end, a trocar disposed adjacent the first end of the handle, a plurality of cannulas disposed on the trocar simultaneously, and a drive system. The drive system is disposed for forward movement of the cannulas in a longitudinal direction away from the first end of the handle.

Claims

1. A trocar system comprising:

a handle having a first end and a second end;

a trocar disposed adjacent the second end of the handle;

a plurality of cannulas disposed on the trocar simultaneously, wherein each cannula includes an annular flange and a cylindrical tube that extends from the flange and defines a central opening sized to receive the trocar therein, the central opening defined at a distal tip of the cannula, wherein the tube has a smooth, cylindrical outer surface that extends to the distal tip of the cannula; and

a drive system operatively connected to at least one of the cannulas and disposed for forward movement of the cannulas in a longitudinal direction away from the first end of the handle.

2. The trocar system of claim 1 wherein the drive system is configured for incremental movement of the cannulas in the forward direction.

3. The trocar system of claim 1 wherein the drive system comprises:

a drive member positioned within a hollow interior section of the handle having a first end a second end and disposed for moving the cannulas in the longitudinal direction away from the first end of the handle; and

a detent mechanism positioned within the hollow interior section and disposed to selectively engage the drive member to limit rearward movement of the drive member in the longitudinal direction towards the first end of the handle.

4. The system of claim 3 further comprising an actuating member connected to the drive member and disposed to move the drive member in the forward direction.

5. The system of claim 4 wherein the actuating member comprises a plunger disposed for depression by a user in the forward direction to move the drive member in the forward direction.

6. The system of claim 3 wherein the detent mechanism is a member biased in a direction radial to the longitudinal direction and disposed for selectively engaging indentations in the drive member to limit rearward movement of the drive member.

7. The trocar system of claim 1 wherein the trocar comprises a blunt insertion device.

8. The trocar system of claim 1 wherein the trocar is shaped for piercing a portion of a patient'"'"'s body and making an incision therein.

9. The trocar system of claim 3 wherein the drive system further comprises a connection device interconnecting the drive member to at least one of the plurality of cannulas, the connection device configured to move forward in the longitudinal direction while the trocar remains stationary.

10. The trocar system of claim 9 wherein the connection device comprises a tube disposed on the trocar.

11. The trocar system of claim 1, wherein the drive system further includes a plunger that extends axially from the first end of the handle and is depressible by a user in the forward direction to actuate the drive system and move the cannulas in the forward direction.

12. A method of using a trocar system to insert a cannula into an incision formed in a portion of a patient'"'"'s body, the trocar system comprising a handle having a first end and a second end, a drive system including a drive member and an actuating member, a trocar disposed adjacent the second end of the handle, and a plurality of cannulas disposed on the trocar simultaneously, each cannula including an annular flange and a cylindrical tube that extends from the flange and defines a central opening sized to receive the trocar therein, the central opening defined at a distal tip of the cannula, the tube having a smooth, cylindrical outer surface that extends to the distal tip of the cannula, the method comprising:

inserting the trocar into an incision in a portion of the patient'"'"'s body;

inserting a first cannula of the plurality of cannulas into the incision such that the first cannula is disposed between the incision and the trocar; and

actuating the actuating member, wherein actuation of the actuating member engages a tooth on the drive member and moves the drive member forward in a longitudinal direction, wherein forward movement of the drive member results in forward movement of a second cannula of the plurality of cannulas in the longitudinal direction away from the first end of the handle to a position adjacent the second end of the handle.

13. The method of claim 12 further comprising removing the trocar from the first cannula.

14. The method of claim 13 further comprising:

inserting the trocar into a second portion of the patient'"'"'s body, wherein insertion of the trocar forms a second incision in the second portion of the patient'"'"'s body; and

inserting the second cannula into the second incision such that the second cannula is disposed between the second incision and the trocar.

15. The method of claim 12 wherein inserting the trocar into the patient'"'"'s body cuts the incision in the portion of the patient'"'"'s body.

16. The method of claim 12 wherein the actuating member includes a plunger, and actuating the actuating member comprises depressing the plunger.