CA2611467A1 - Medical stapler - Google Patents

Medical stapler Download PDF

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Publication number
CA2611467A1
CA2611467A1 CA002611467A CA2611467A CA2611467A1 CA 2611467 A1 CA2611467 A1 CA 2611467A1 CA 002611467 A CA002611467 A CA 002611467A CA 2611467 A CA2611467 A CA 2611467A CA 2611467 A1 CA2611467 A1 CA 2611467A1
Authority
CA
Canada
Prior art keywords
staple
tine
medical device
shape memory
elongate shaft
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002611467A
Other languages
French (fr)
Other versions
CA2611467C (en
Inventor
Vihar C. Surti
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Cook Endoscopy
Original Assignee
Wilson-Cook Medical, Inc.
Vihar C. Surti
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Wilson-Cook Medical, Inc., Vihar C. Surti filed Critical Wilson-Cook Medical, Inc.
Publication of CA2611467A1 publication Critical patent/CA2611467A1/en
Application granted granted Critical
Publication of CA2611467C publication Critical patent/CA2611467C/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/068—Surgical staplers, e.g. containing multiple staples or clamps
    • A61B17/0682—Surgical staplers, e.g. containing multiple staples or clamps for applying U-shaped staples or clamps, e.g. without a forming anvil
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/064—Surgical staples, i.e. penetrating the tissue
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/064—Surgical staples, i.e. penetrating the tissue
    • A61B17/0644—Surgical staples, i.e. penetrating the tissue penetrating the tissue, deformable to closed position
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B2017/00831—Material properties
    • A61B2017/00867—Material properties shape memory effect
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/08—Wound clamps or clips, i.e. not or only partly penetrating the tissue ; Devices for bringing together the edges of a wound
    • A61B2017/081—Tissue approximator

Abstract

A stapler for delivering a staple formed from a shape memory material is disclosed. The staple includes a first tine and a second tine connected by a bridge. The staple may be disposed within the stapler in an open position with the first tine distal of the second tine. The stapler is configured to sequentially deliver the first tine and the second tine, respectively, to opposing body tissues. The stapler includes an elongate shaft (e.g., a catheter) having a working lumen and a control mechanism for delivering the staple. A drive cable extends along the working lumen of the elongate shaft.
Upon warming up to a temperature at or above a transformation temperature of the shape memory material, the staple may assume a closed position, thus drawing together opposing body tissues and closing an incision.

Claims (20)

1. A medical device, comprising:

an elongate shaft having a working lumen; and a staple disposed in an open position in the working lumen, the staple comprising a first tine and a second tine connected by a bridge portion, the staple further comprising a shape memory material and being configured to transition from the open position to a closed position at or above a transformation temperature of the shape memory material, wherein the first tine is disposed distal of the second tine in the working lumen.
2. The medical device according to claim 1, wherein an end of the first tine or and end of the second tine is bent toward the other tine in the open position.
3. The medical device according to claim 1, wherein at least one of the first tine and the second tine extend generally along a line of the bridge portion in the open position.
4. The medical device according to claim 1, wherein the staple is disposed in the closed position after delivery to a body tissue.
5. The medical device according to claim 4, wherein the first tine and the second tine are bent toward each other in the closed position, thereby enabling closure of an incision.
6. The medical device according to claim 1, further comprising a control mechanism extending through the working lumen of the elongate shaft.
7. The medical device according to claim 1, wherein the transformation temperature of the shape memory material is in the range of from about 32°C to about 40°C.
8. The medical device of claim 1, wherein the shape memory material is a shape memory alloy.
9. The medical device of claim 8, wherein the shape memory alloy comprises nickel and titanium.
10. The medical device according to claim 1, wherein the elongate shaft further comprises a proximal portion and a distal portion, and a slot disposed along the distal portion, the slot being configured to allow a portion of the staple to pass therethrough.
11. A medical device, comprising:

a staple formed from a shape memory material and having an open position and a closed position;

an elongate shaft having a working lumen extending at least partially therethrough, the working lumen being adapted for receiving the staple in the open position;
and a control member extending along the lumen, the control member being adapted for delivery of the staple to a body tissue, wherein the staple assumes the closed position when disposed in the body tissue.
12. The medical device according to claim 11, wherein the control member is adapted for delivery of the staple to the body in sequential stages.
13. The medical device according to claim 11, wherein the staple further comprises a first tine and a second tine connected by a bridge portion, and wherein an end of the first tine is disposed distal of the second tine when the staple is received in the lumen in the open position.
14. The medical device according to claim 11, wherein the shape memory material comprises a high temperature phase and a low temperature phase.
15. The medical device according to claim 14, wherein the staple comprises the low temperature phase of the shape memory material in the open position and the high temperature phase of the shape memory material in the closed position.
16. The medical device of claim 11, wherein the elongate shaft further comprises a axial slot in a distal portion of the elongate shaft, the slot being configured to allow a portion of the staple to pass therethrough.
17. A method of approximating opposing tissue portions, comprising the steps of a) providing a medical device, the medical device comprising:
an elongate shaft having a proximal end, a distal end, and a working lumen extending along a longitudinal axis;
a staple disposed in an open position in the working lumen, the staple comprising a first tine and a second tine connected by a bridge portion, the staple further comprising a shape memory material and being configured to transition from the open position to a closed position at or above a transformation temperature of the shape memory material, wherein an end of the first tine is disposed distal of the second tine in the working lumen; and a control wire located at least partly within the working lumen of the elongate shaft, wherein the control wire is releasably attached to the staple;

b) positioning the medical device such that the distal end of the elongate shaft is aligned with a first portion of a body tissue;

c) actuating the control wire to insert the first end of the staple into the first portion of the body tissue adjacent an incision; and d) actuating the control wire to insert the second end of the staple into a second portion of the body tissue adjacent an incision, thereby approximating the opposing tissue portions.
18. The method according to claim 17, further comprising extending the staple through a slot in the elongate shaft to facilitate insertion of the second end of the staple.
19. The method according to claim 17, further comprising manipulating one of the elongate shaft and the control wire to move the staple to draw the first portion of the body tissue toward a second portion of the body tissue adjacent an incision.
20. The method according to claim 17, further comprising introducing the medical device through an endoscope to a target site in a body prior to positioning the medical device.
CA2611467A 2005-06-10 2006-06-07 Medical stapler Expired - Fee Related CA2611467C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US68958905P 2005-06-10 2005-06-10
US60/689,589 2005-06-10
PCT/US2006/022158 WO2006135642A1 (en) 2005-06-10 2006-06-07 Medical stapler

Publications (2)

Publication Number Publication Date
CA2611467A1 true CA2611467A1 (en) 2006-12-21
CA2611467C CA2611467C (en) 2011-01-11

Family

ID=37022951

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2611467A Expired - Fee Related CA2611467C (en) 2005-06-10 2006-06-07 Medical stapler

Country Status (6)

Country Link
US (2) US8342376B2 (en)
EP (1) EP1895914B1 (en)
JP (1) JP5013489B2 (en)
AU (1) AU2006258052B2 (en)
CA (1) CA2611467C (en)
WO (1) WO2006135642A1 (en)

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Also Published As

Publication number Publication date
WO2006135642A1 (en) 2006-12-21
JP2008543371A (en) 2008-12-04
US20130087598A1 (en) 2013-04-11
AU2006258052A1 (en) 2006-12-21
CA2611467C (en) 2011-01-11
EP1895914A1 (en) 2008-03-12
US20060282118A1 (en) 2006-12-14
EP1895914B1 (en) 2016-12-21
US9259222B2 (en) 2016-02-16
US8342376B2 (en) 2013-01-01
AU2006258052B2 (en) 2012-02-09
JP5013489B2 (en) 2012-08-29

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Legal Events

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EEER Examination request
MKLA Lapsed

Effective date: 20150608