Placement tools for body cavity drainage devices and related methods

• US 10,029,036 B2
• Filed: 06/27/2014
• Issued: 07/24/2018
• Est. Priority Date: 06/27/2014
• Status: Active Grant

• Current Assignee: Lazarus Medical Technologies, LLC
• Original Assignee: Merit Medical Systems, Inc.
• Inventors: Lazarus, Harrison M.
• Primary Examiner(s): MARCETICH, ADAM M
• Application Number:
  US14/318,571
• Publication Number:
  US 20150374891A1
• Time in Patent Office: 1,488 Days
• CPC Class Codes: A61B 1/00165 with light-conductive means, e.g. fibre optics A61B1/07 takes precedence
• CPC Class Codes: A61B 1/0052 Constructional details of control elements, e.g. handles
• CPC Class Codes: A61B 1/042 characterised by a proximal camera, e.g. a CCD camera
• 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 2090/701 for flexible tubular instruments, e.g. endoscopes
• CPC Class Codes: A61M 1/84 Drainage tubes; Aspiration tips for negative pressure wound therapy A61M1/90; for surgical cutting instruments A61B17/32
• CPC Class Codes: A61M 2025/0019 Cleaning catheters or the like, e.g. for reuse of the device, for avoiding replacement
• CPC Class Codes: A61M 2205/587 Lighting arrangements
• CPC Class Codes: A61M 2209/10 Equipment for cleaning
• CPC Class Codes: A61M 2210/101 Pleural cavity
• CPC Class Codes: A61M 25/0136 Handles therefor
• CPC Class Codes: A61M 25/0147 with movable mechanical means, e.g. pull wires
• CPC Class Codes: A61M 27/00 Drainage appliance for wounds or the like , i.e. wound drains, implanted drains negative pressure wound therapy devices A61M1/90; implements for holding wound open A61B17/02 ; middle ear drainage A61F11/202

Abstract

A body cavity drainage device placement tool for placing a body cavity drainage tube at least partially within a body cavity of a patient. The body cavity drainage device includes a shaft, a handle attached to or integral with a proximal end of the shaft, and a distal end of the shaft sized and configured for insertion through a lateral opening of the body cavity drainage tube and at least partially through a central lumen of the body cavity drainage tube to proximate a distal end of the body cavity drainage tube. Methods relate to using a body cavity drainage device placement tool.

Claims

1. A body cavity drainage device placement tool for placing a body cavity drainage tube at least partially within a body cavity of a patient, the body cavity drainage device placement tool comprising:

a shaft having a substantially circular cross-sectional shape extending between a proximal end and a distal end of the shaft, the shaft comprising;

a straight portion at the proximal end of the shaft; and

a fixed curved portion at the distal end of the shaft, the fixed curved portion having a first diameter proximate to a transition between the straight portion and the fixed curved portion and having a second, smaller diameter at a distal end of the fixed curved portion, the distal end of the fixed curved portion defining the distal end of the shaft, wherein the shaft transitions from the first diameter to the second diameter at a shoulder and the second diameter of the shaft is smaller than an inside diameter of a ferrule coupled to a distal end of the body cavity drainage tube, and a projection of the ferrule extends into a central lumen of the body cavity drainage tube; and

a handle attached to or integral with the proximal end of the shaft,

wherein the distal end of the shaft is sized and configured for insertion through one lateral opening of a plurality of lateral openings proximate to a distal end of the body cavity drainage tube and at least partially through the central lumen of the body cavity drainage tube and the second diameter of the shaft is configured to extend through the ferrule of the body cavity drainage tube, and

wherein the body cavity drainage device placement tool stiffens the body cavity drainage tube such that the body cavity drainage tube is configured for insertion through an incision in the patient and into a pleural cavity without collapsing.

2. The body cavity drainage device placement tool of claim 1, wherein the shaft comprises a varying cross-sectional shape.

3. The body cavity drainage device placement tool of claim 2, wherein the shaft comprises a first diameter at the proximal end and a second, different diameter at the distal end.

4. The body cavity drainage device placement tool of claim 3, wherein the first diameter is greater than the second diameter.

5. The body cavity drainage device placement tool of claim 1, wherein the shoulder is proximate the distal end of the shaft.

6. The body cavity drainage device placement tool of claim 5, wherein the shoulder is less than about one (1) inch (25.4 mm) from the distal end of the shaft.

7. The body cavity drainage device placement tool of claim 1, wherein the shoulder of the shaft is configured to abut the ferrule when the distal end of the body cavity drainage device placement tool is positioned proximate the distal end of the body cavity drainage tube.

8. The body cavity drainage device placement tool of claim 1, wherein the shoulder is proximate the proximal end of the shaft.

9. The body cavity drainage device placement tool of claim 8, wherein the shoulder is configured to abut a wall of the body cavity drainage tube surrounding a lateral opening when the distal end of the body cavity drainage device placement tool is proximate the distal end of the body cavity drainage tube.

10. The body cavity drainage device placement tool of claim 1, wherein the shaft has a length sufficient to extend through one lateral opening of the plurality of lateral openings of the body cavity drainage tube and through the central lumen of the body cavity drainage tube and to position the distal end of the shaft beyond a distal end of the body cavity drainage tube.

11. The body cavity drainage device placement tool of claim 1, further comprising a channel extending through the shaft, wherein the channel is sized and configured to accommodate at least one of a guide wire and an optical fiber, to facilitate placement of the body cavity drainage device placement tool within the body cavity of the patient.

12. The body cavity drainage device placement tool of claim 1, wherein the body cavity drainage device placement tool has a modulus of elasticity greater than a modulus of elasticity of the body cavity drainage tube.

13. A method of inserting a body cavity drainage device into a body cavity of a patient, comprising:

inserting a distal end of a shaft of a placement tool through one lateral opening of a plurality of lateral openings in a body cavity drainage tube proximate to a distal end of the body cavity drainage tube and into a central lumen of the body cavity drainage tube, the shaft of the placement tool having a substantially circular cross-sectional shape extending between a proximal end and the distal end of the shaft, the shaft comprising;

a straight portion at the proximal end of the shaft; and

a fixed curved portion at the distal end of the shaft, the fixed curved portion having a first diameter proximate to a transition between the straight portion and the fixed curved portion and having a second, smaller diameter at a distal end of the fixed curved portion, the distal end of the fixed curved portion defining the distal end of the shaft, wherein the shaft transitions from the first diameter to the second diameter at a shoulder and the second diameter of the shaft is smaller than an inside diameter of a ferrule coupled to a distal end of the body cavity drainage tube, and a projection of the ferrule extends into the central lumen of the body cavity drainage tube;

abutting the shoulder of the shaft against one of the body cavity drainage tube and the ferrule coupled to the distal end of the body cavity drainage tube to position the distal end of the shaft of the placement tool and the second diameter of the shaft is configured to extend through the ferrule of the body cavity drainage tube;

inserting the body cavity drainage tube and placement tool through an incision in the patient and into the body cavity of the patient wherein inserting the body cavity drainage tube and placement tool through an incision in the patient and into the body cavity of the patient comprises inserting the body cavity drainage tube and placement tool through an incision in the patient and into the pleural cavity of the patient without collapsing; and

removing the placement tool from the body cavity drainage tube and body cavity, wherein the body cavity drainage tube remains in the body cavity in its inserted position as the placement tool is removed from the body cavity drainage tube.

14. The method of claim 13, wherein inserting a distal end of a shaft of a placement tool through a lateral opening in a body cavity drainage tube comprises inserting the distal end of the shaft of the placement tool through a lateral opening comprising at least one slit extending into a wall of the body cavity drainage tube.

15. The method of claim 13, wherein inserting a distal end of a shaft of a placement tool through one lateral opening of a plurality of lateral openings in a body cavity drainage tube comprises inserting the distal end of the shaft of the placement tool through one lateral opening of the plurality of lateral openings having a diameter greater than a diameter of another lateral opening of the plurality of lateral openings of the body cavity drainage tube.

16. The method of claim 13, further comprising, after removing the placement tool from the body cavity drainage tube and body cavity, positioning the body cavity drainage tube in a curved position in the body cavity.