Surgical Instrument Having A Plastic Surface

• US 20110073633A1
• Filed: 11/30/2010
• Published: 03/31/2011
• Est. Priority Date: 10/06/2006
• Status: Active Grant

• Current Assignee: Covidien LP (Medtronic Plc)
• Original Assignee: Tyco Healthcare Group LP (Medtronic Plc)
• Inventors: Scirica, Paul
• Granted Patent: US 8,191,752 B2
• Time in Patent Office: Days
• US Class Current: 227/176.1
• CPC Class Codes: A61B 17/068 Surgical staplers , e.g. containing multiple staples or clampsstaplers containing only one staple A61B17/10; magazines or containers for staples A61B17/105; for performing anastomosis A61B17/115; staplers in general B25C5/00
• CPC Class Codes: A61B 17/0686 having a forming anvil staying below the tissue during stapling
• CPC Class Codes: A61B 17/072 for applying a row of staples in a single action , e.g. the staples being applied simultaneously
• CPC Class Codes: A61B 17/07207 the staples being applied sequentially
• CPC Class Codes: A61B 17/105 Wound clamp magazines for packaging sharps A61B50/3001
• CPC Class Codes: A61B 17/115 Staplers for performing anastomosis in a single operation
• CPC Class Codes: A61B 2017/0023 disposable
• CPC Class Codes: A61B 2017/0046 with a releasable handle; with handle and operating part separable for prosthetic joint-implanting tools A61F2/4603
• CPC Class Codes: A61B 2017/00473 Distal part, e.g. tip or head A61B2017/00464 takes precedence
• CPC Class Codes: A61B 2017/00526 Methods of manufacturing
• CPC Class Codes: A61B 2017/0084 low friction A61B2017/00853 takes precedence
• CPC Class Codes: A61B 2017/00845 of moving parts with respect to each other
• CPC Class Codes: A61B 2017/00853 low friction, hydrophobic and corrosion-resistant fluorocarbon resin coating (ptf, ptfe, polytetrafluoroethylene)
• CPC Class Codes: A61B 2017/00964 composite
• CPC Class Codes: A61B 2017/07214 Stapler heads
• CPC Class Codes: A61B 2017/07271 characterised by its cartridge
• CPC Class Codes: A61B 2017/07278 characterised by its sled or its staple holder
• CPC Class Codes: A61B 2017/07285 characterised by its cutter
• CPC Class Codes: A61B 2017/2902 characterized by features of the actuating rod
• CPC Class Codes: A61B 2017/2927 the angular position of the head being adjustable with respect to the shaft
• CPC Class Codes: A61B 2017/2936 : Pins in guiding slots
• CPC Class Codes: A61B 2017/2943 : Toothed members, e.g. rack and pinion
• CPC Class Codes: A61B 2017/2946 : Locking means
• CPC Class Codes: A61B 2017/320052 : Guides for cutting instruments by marking A61B2090/395

Abstract

A surgical instrument including a handle portion, a body portion, a movable handle, a tool assembly, a drive beam and a closure apparatus is disclosed. At least one of the closure apparatus and a contact surface of the tool assembly include a plastic surface. The body portion extends distally from the handle portion. The movable handle is located on the handle portion and is in mechanical cooperation with a drive member. The tool assembly includes an anvil, a cartridge assembly and a contact surface. The drive beam includes a proximal engagement portion and is configured to engage a portion of the drive member. The closure apparatus is configured to engage the contact surface of the tool assembly. At least a partial actuation of the movable handle moves the closure apparatus distally into engagement with the contact surface to approximate the anvil and the cartridge assembly.

Claims

1-11. -11. (canceled)

12. A disposable loading unit, comprising:

a drive beam having a proximal engagement portion disposed adjacent a proximal end thereof, the drive beam defining a first longitudinal axis;

a tool assembly including an anvil, a cartridge assembly and a contact surface, the tool assembly being disposed distally of the drive beam and defining a second longitudinal axis;

a closure apparatus disposed adjacent a distal end of the drive beam being configured to engage the contact surface of the tool assembly, whereby distal movement of the drive beam moves the closure apparatus distally into engagement with the contact surface to approximate the anvil and the cartridge assembly; and

wherein at least one of the closure apparatus and the contact surface includes a plastic surface.

13. The disposable loading unit of claim 12, wherein the closure apparatus includes at least one plastic cap at least partially covering a portion thereof.

14. The disposable loading unit of claim 13, wherein the plastic cap covers at least one horizontal surface of the closure apparatus.

15. The disposable loading unit of claim 12, wherein at least a portion of the closure apparatus is made of plastic.

16. The disposable loading unit of claim 12, wherein at least a portion of the closure apparatus is overmolded with plastic.

17. The surgical instrument of claim 12, wherein the closure apparatus includes an, I-shaped cross section.

18. The disposable loading unit of claim 12, wherein at least a portion of the contact surface and at least a portion of the closure apparatus include a plastic surface thereon.

19. The disposable loading unit of claim 12, wherein the drive beam includes a plurality of layers.

20. The disposable loading unit of claim 12, wherein the tool assembly being movable from a first position in which the second longitudinal axis is substantially aligned with the first longitudinal axis to a second position in which the second longitudinal axis is disposed at an angle to the first longitudinal axis.