Rotatable Stapling Head Of A Surgical Stapler

• US 20090001127A1
• Filed: 06/29/2005
• Published: 01/01/2009
• Est. Priority Date: 01/26/2005
• Status: Active Grant

• Current Assignee: Touchstone International Medical Science Co. Ltd
• Original Assignee: Suzhou Touchstone International Medical Science Co., Ltd.
• Inventors: Lin, Jiang, Yin, Wei-zhong, Chen, Wang-dong, Chen, Quan, Lu, Ming-yao
• Granted Patent: US 7,770,776 B2
• Time in Patent Office: Days
• US Class Current: 227/179.100
• CPC Class Codes: A61B 17/1114 of the digestive tract, e.g. bowels or oesophagus
• CPC Class Codes: A61B 17/115 Staplers for performing anastomosis in a single operation
• CPC Class Codes: A61B 17/1155 Circular staplers comprising a plurality of staples
• CPC Class Codes: A61B 17/32053 Punch like cutting instruments, e.g. using a cylindrical or oval knife A61B17/326 takes precedence; trepans A61B17/1695; for use on the cornea A61F9/007

Abstract

The present invention provides a rotatable stapling head of a surgical stapler, which comprises a staple cartridge (1), a staple driver (2), a scalpel (3), a compression rod (4), a staple casing (5) and a rotating assembly. The above parts constitute a rotating forward mechanism which can rotatablely forward the scalpel therein.

Claims

1. A rotatable stapling head of a surgical stapler comprises:

a staple cartridge, a staple driver, a scalpel, a compression rod, a staple casing, and a rotating assembly;

wherein said staple cartridge, staple driver, scalpel, compression rod, staple casing, and rotating assembly constitute a rotating forward mechanism which can rotatablely forward said scalpel therein, so that said scalpel makes axial movements while rotating.

2. The rotatable stapling head of a surgical stapler according to claim 1, wherein said rotating assembly includes a rotating sleeve and a spiral track member;

said staple cartridge, staple driver, scalpel, compression rod, staple casing, rotating sleeve and spiral track member constitute a rotating forward mechanism which can rotatablely forward said scalpel therein;

and wherein said staple casing is a tubular casing with an inner step shaped cavity inside which is disposed a support tube;

a step-shape tubular staple driver, which conforms to the shape of the inner wall of the staple casing, is disposed between the support tube and the inner wall of the staple casing;

and wherein a scalpel cavity is formed in front of the staple casing and the staple driver, which matches the annular scalpel; and

the annular scalpel is sleeved outside the support tube and disposed inside the scalpel cavity;

and wherein the rotating sleeve has therein a concave-convex structure selected from the group consisting of flutes and bosses;

the spiral track member is disposed on the support tube inside the staple casing so as to match with the concave-convex structure of the rotating sleeve;

and wherein the front circular rim of the staple casing is connected with the annular staple cartridge and the front circular rim of the staple driver contacts with the annular staple cartridge; and

the annular scalpel is connected with the staple driver and the support tube by means of the rotating sleeve.

3. The rotatable stapling head of a surgical stapler according to claim 2, wherein the rotating sleeve is fixed with the annular scalpel;

and wherein a slide mechanism is disposed at the bottom of the rotating sleeve; and

wherein a hook is disposed at the bottom of the front cavity of the staple driver so as to hook with the bottom of the rotating sleeve.

4. The rotatable stapling head of a surgical stapler according to claim 3, wherein said slide mechanism comprises balls, ball collars and gaskets.

5. The rotatable stapling head of a surgical stapler according to claim 2, wherein said rotating sleeve is disposed at the inner bottom of the annular scalpel;

a hook is disposed at the bottom of the front cavity of the staple driver so as to hook with the bottom of the annular scalpel.

6. The rotatable stapling head of a surgical stapler according to claim 2, wherein said rotating sleeve is disposed at the outer bottom of the annular scalpel;

a hook is disposed at the bottom of the front cavity of the staple driver so as to hook with the bottom of the rotating sleeve.

7. The rotatable stapling head of a surgical stapler according to claim 2, wherein the spiral track member is a spiral track directly disposed on the support tube;

the rotating sleeve and the support tube are connected by means of the spiral track on the support tube.

8. The rotatable stapling head of a surgical stapler according to claim 2, wherein said spiral track member is a fixed spiral sleeve with the spiral track disposed on the outer wall thereof, and the fixed spiral sleeve is fixed outside the support tube;

the support tube has a threaded insert on its front end with a limit fastening nut disposed thereon.

9. The rotatable stapling head of a surgical stapler according to claim 1, wherein said staple driver and the compression rod are disposed separately and smoothly touch with each other.

10. The rotatable stapling head of a surgical stapler according to claim 1, wherein said rotating assembly is a connecting rod assembly;

and wherein said staple cartridge, staple driver, scalpel, staple casing, and connecting rod assembly constitute a rotating forward mechanism which can rotatablely forward said scalpel therein;

said staple casing is a tubular casing with an inner step shaped cavity inside which is disposed a support tube;

a step-shape tubular staple driver, which conforms to the shape of the inner wall of the staple casing, is disposed between the support tube and the inner wall of the staple casing;

a scalpel cavity is formed in front of the staple casing and the staple driver, which matches the annular scalpel;

the annular scalpel is sleeved outside the support tube and disposed inside the scalpel cavity; and

wherein the front circular rim of the staple casing is connected with the annular staple cartridge and the front circular rim of the staple driver contacts with the annular staple cartridge; and

wherein the annular scalpel is connected with the staple driver and the support tube by means of the connecting rod assembly.

11. The rotatable stapling head of a surgical stapler according to claim 10, wherein said connecting rod assembly comprises a fastening nut, a rotating sleeve, first hinge mounts, pins, connecting rods, a hinge mount sleeve, second hinge mounts and a fastening bolt;

a threaded insert is disposed on a stepped outer wall of the support tube in the annular scalpel;

the hinge mount sleeve is disposed on a shoulder of the stepped outer wall of the support tube below the threaded insert;

the first hinge mounts are disposed on the hinge mount sleeve;

a fastening nut is disposed on the first hinge mounts by means of the threaded insert;

the bottom of each of the first hinge mounts is connected movably with one end of one of the connecting rods by means of one of the pins, the other end of the connecting rod is connected movably with one of the second hinge mounts which is disposed in the rotating sleeve that fixed below the front of the staple driver by means of one of the pins.

12. The rotatable stapling head of a surgical stapler according to claim 1, wherein said rotating assembly is an inclined surface &

rotating sleeve assembly; and

wherein said staple cartridge, staple driver, scalpel, staple casing, and inclined surface &

rotating sleeve assembly constitute a rotating forward mechanism which can rotatablely forward said scalpel therein;

said staple casing is a tubular casing with an inner step shaped cavity inside which is disposed a support tube;

a step-shape tubular staple driver, which conforms to the shape of the inner wall of the staple casing, is disposed between the support tube and the inner wall of the staple casing;

a scalpel cavity is formed in front of the staple casing and the staple driver, which matches the annular scalpel;

the annular scalpel is sleeved outside the support tube and disposed inside the scalpel cavity; and

wherein the front circular rim of the staple casing is connected with the annular staple cartridge and the front circular rim of the staple driver contacts with the annular staple cartridge; and

the annular scalpel is connected with the staple driver and the support tube by means of the inclined surface &

rotating sleeve assembly.

13. The rotatable stapling head of a surgical stapler according to claim 12, wherein said inclined surface &

rotating sleeve assembly comprises a connecting sleeve, a rotating sleeve, a threaded insert and a fastening nut;

the threaded insert is disposed at the front of the support tube;

the connecting sleeve and the fastening nut are fixed respectively outside the threaded insert;

inclined surfaces are disposed on the outer wall of the connecting sleeve;

the rotating sleeve is hinged at the inner bottom of the annular scalpel with inclined surfaces disposed thereon which match with the inclined surfaces disposed on the connecting sleeve;

a hook disposed at the bottom of the front of the staple driver goes through into the bottom of the annular scalpel so as to hook with the bottom of the rotating sleeve.

14. The rotatable stapling head of a surgical stapler according to claim 12, wherein said inclined surface &

rotating sleeve assembly comprises a connecting sleeve, a rotating sleeve, a threaded insert and a fastening nut;

the threaded insert is disposed at the front of the support tube;

the connecting sleeve and the fastening nut are fixed respectively outside the threaded insert, inclined surfaces are disposed on the outer wall of the connecting sleeve;

the rotating sleeve is hinged at the outer bottom of the annular scalpel with inclined surfaces disposed thereon which match with the inclined surfaces disposed on the connecting sleeve;

a hook is disposed at the bottom of the front of the staple driver so as to hook with the bottom of the rotating sleeve.

15. The rotatable stapling head of a surgical stapler according to claim 1, wherein said rotating assembly is a string &

rotating sleeve assembly; and

wherein said staple cartridge, staple driver, scalpel, staple casing, and string &

rotating sleeve assembly constitute a rotating forward mechanism which can rotatablely forward said scalpel therein;

said staple casing is a tubular casing with an inner step shaped cavity inside which is disposed a support tube;

a step-shape tubular staple driver, which conforms to the shape of the inner wall of the staple casing, is disposed between the support tube and the inner wall of the staple casing;

a scalpel cavity is formed in front of the staple casing and the staple driver, which matches the annular scalpel;

the annular scalpel is sleeved outside the support tube and disposed inside the scalpel cavity; and

wherein the front circular rim of the staple casing is connected with the annular staple cartridge and the front circular rim of the staple driver contacts with the annular staple cartridge; and

the annular scalpel is connected with the staple driver and the support tube by means of the string &

rotating sleeve assembly.

16. The rotatable stapling head of a surgical stapler according to claim 15, wherein said the string &

rotating sleeve assembly comprises a rotating sleeve, a string lock, a string and a torsion spring;

the rotating sleeve is sleeved outside the support tube and fixed at the outer bottom of the annular scalpel;

the upper of the rotating sleeve is connected with the outer wall of the support tube by means of the torsion spring; and

the string is disposed below the rotating sleeve with one end of the string fixed at the bottom of the rotating sleeve, and the other end of the string goes through out of the staple casing to be fixed with the string lock;

a hook is disposed at the bottom of the front cavity of the staple driver so as to hook with the bottom of the rotating sleeve.

17. The rotatable stapling head of a surgical stapler according to claim 1, wherein said rotating assembly enables the scalpel to make rotating movements reciprocally.