Access port

• US 8,562,520 B2
• Filed: 08/18/2011
• Issued: 10/22/2013
• Est. Priority Date: 10/01/2010
• Status: Expired due to Fees

• Current Assignee: Covidien LP (Medtronic Plc)
• Original Assignee: Covidien LP (Medtronic Plc)
• Inventors: Rockrohr, Brian
• Primary Examiner(s): Philogene, Pedro
• Application Number:
  US13/212,237
• Publication Number:
  US 20120083661A1
• Time in Patent Office: 796 Days
• Field of Search: 600/202, 600205-210, 604/167.01, 604/167.03, 604/167.06, 604/167.07, 604/264
• US Class Current: 600/208
• CPC Class Codes: A61B 17/34 Trocars; Puncturing needles pointed biopsy instruments A61B10/0233; devices for piercing the ear-lobes A44C7/001; seals or hemostasis valves A61M39/06
• CPC Class Codes: A61B 17/3421 Cannulas
• CPC Class Codes: A61B 17/3462 with means for changing the diameter or the orientation of the entrance port of the cannula, e.g. for use with different-sized instruments, reduction ports, adapter seals expandable cannulas A61B17/3417
• CPC Class Codes: A61B 2017/2905 flexible
• CPC Class Codes: A61B 2017/2927 the angular position of the head being adjustable with respect to the shaft
• CPC Class Codes: A61B 2017/3454 Details of tips
• CPC Class Codes: A61B 2017/349 Trocar with thread on outside
• CPC Class Codes: A61B 2090/034 abutting on parts of the device itself

Abstract

A surgical access port assembly is provided including a cannula and an obturator insertable through the cannula. The cannula includes a housing having a hollow elongate tubular member extending distally from the housing. A duckbill valve is provided within the housing and includes an outer support rim and a pair of opposed multi-angle leaflets extending inwardly from the outer support rim. Each leaflet includes a lead in portion oriented at a first angle relative to the support rim and an entry portion extending from the lead in portion and oriented at a second angle relative to the support rim. The second angle is greater than the first angle.

Claims

1. A surgical access port comprising:

a hollow housing having a hollow elongate tubular member extending from the housing;

a duckbill valve positioned within the housing and having an outer support rim and first and second opposed leaflets extending inwardly of the outer support rim, each leaflet including a lead in portion oriented at a first angle relative to the outer support rim and an entry portion extending from the lead in portion and oriented at a second angle relative to the outer support rim, the first angle being different than the second angle, wherein terminal ends of the first and second leaflets define a slit therebetween; and

a reinforcing rib on each of the first and second leaflets, each reinforcing rib extending from the outer support rim to the slit.

2. The surgical access port as recited in claim 1, wherein the second angle is greater than the first angle.

3. The surgical access port as recited in claim 1, wherein the reinforcing ribs traverse both the lead in portions and entry portions of the first and second leaflets.

4. The surgical access port as recited in claim 3, wherein the reinforcing ribs are centrally located on the first and second leaflets.

5. The surgical access port as recited in claim 2, further comprising an instrument seal positioned within the housing proximal to the duckbill valve.

6. The surgical access port as recited in claim 2, further comprising an end piece on a proximal end of the housing and having an opening for receipt of a surgical instrument.

7. The surgical access port as recited in claim 2, wherein the duckbill valve is formed of a synthetic rubber material.

8. The surgical access port as recited in claim 7, wherein the duckbill valve is formed of a polyisoprene.

9. The surgical access port as recited in claim 8, wherein the polyisoprene has a durometer of shore 30-40.

10. The surgical access port as recited in claim 2, further comprising a removable reducer cap positioned on the housing.

11. The surgical access port as recited in claim 2, wherein the elongate tubular member includes an enlarged indicia ring to limit the depth of penetration of the elongate tubular member.

12. A surgical access port assembly comprising:

a cannula including a hollow housing having a hollow elongate tubular member extending from the housing and a duckbill valve positioned within the housing and having an outer support rim and first and second opposed leaflets extending inwardly of the outer support rim, each leaflet including a lead in portion oriented at a first angle relative to the outer support rim and an entry portion extending from the lead in portion and oriented at a second angle relative to the outer support rim, wherein terminal ends of the first and second opposed leaflets define a slit therebetween;

a reinforcing rib disposed on each of the first and second leaflets, each reinforcing rib extending from the outer support rim to the slit; and

an obturator insertable through the cannula and having an elongate member terminating in a smooth obturator tip.

13. The surgical access port assembly as recited in claim 12, wherein the smooth obturator tip has a rounded distal tip.

14. The surgical access port assembly as recited in claim 12, wherein the smooth obturator tip has a conical distal tip.

15. A surgical access port comprising:

a hollow housing;

a hollow elongate tubular member extending from the housing, the elongate tubular member including a rigid proximal portion, a flexible central portion and a rigid distal portion;

a duckbill valve positioned within the housing and having an outer support rim and first and second opposed leaflets extending inwardly of the outer support rim, each leaflet including a lead in portion oriented at a first angle relative to the outer support rim and an entry portion extending from the lead in portion and oriented at a second angle relative to the outer support rim, wherein terminal ends of the first and second opposed leaflets define a slit therebetween; and

a reinforcing rib disposed on each of the first and second opposed leaflets, each reinforcing rib extending from the outer support rim, across each respective entry portion and lead in portion to the slit.

16. The surgical access port as recited in claim 15, wherein the flexible portion is corrugated and includes a plurality of ribs.

17. The surgical access port as recited in claim 16, wherein the flexible portion is bendable so as to orient the rigid distal portion up to 180°

relative to the rigid proximal portion.

18. The surgical access port as recited in claim 17, wherein the flexible portion is longitudinally extendable.