US2246647A - Stapling device - Google Patents

Stapling device Download PDF

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Publication number
US2246647A
US2246647A US244995A US24499538A US2246647A US 2246647 A US2246647 A US 2246647A US 244995 A US244995 A US 244995A US 24499538 A US24499538 A US 24499538A US 2246647 A US2246647 A US 2246647A
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United States
Prior art keywords
rack
plunger
lug
spring
housing
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Expired - Lifetime
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US244995A
Inventor
Vancura Rudolf
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Firm Reissnagel Und Metallkurz
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Priority to US244995A priority Critical patent/US2246647A/en
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Publication of US2246647A publication Critical patent/US2246647A/en
Anticipated expiration legal-status Critical
Application status is Expired - Lifetime legal-status Critical

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25CHAND-HELD NAILING OR STAPLING TOOLS; MANUALLY OPERATED PORTABLE STAPLING TOOLS
    • B25C5/00Manually operated portable stapling tools; Hand-held power-operated stapling tools; Staple feeding devices therefor
    • B25C5/06Manually operated portable stapling tools; Hand-held power-operated stapling tools; Staple feeding devices therefor without provision for bending the ends of the staples on to the work

Description

June 24, 1941.

R. VANCURA 2,246,647-

STAPLING DEVICE Filed Dec. 10, 1938 In ventar Rudolf Vancur'a y W M Attorney.

Patented June 24, 1941 STAPLIN G DEVICE Rudolf Vancura, Vienna, Germany, assignor to the firm Reissnigelund Metallkurzwarenfabrik Heinrich Sachs, Vienna, Germany Application December 10, 1938, Serial No. 244,995

4Claims.

This invention relates to stapling devices with a full-stroke mechanism for the staple-driving plunger. In the known stapling devices the fullstroke mechanism consists of coacting elements, suchas for instance teeth and pawls provided on the plunger and its housing, respectively, and adapted to arrest the plunger on its downstroke, so as to prevent the plunger from being restored to its initial position by its return spring before the plunger has completed its downstroke and expelled from the vertical guideway the foremost staple detached from the row of staples inserted in the device. In this manner a safeguard is provided against the possibility of two or more staples being driven at a time into the guideway and blocking the latter.

In the known types of the full-stroke mechanisms there are provided, for restoring the pawl into the position of rest, either spring-loaded releasing latches or accurately machined positive guiding elements, such as cam grooves or the like. These mechanisms are thus comp ed of a number of parts and moving elements which must be of small size owing to the small space available for their accommodation in the plunger housing and extremely accurately turned out or machined and which necessitate time-consuming work for their'assembling. These types of fullstroke mechanisms are thus complicated and expensive, without actually providing a reliable safeguard against trouble in connection with the operation of the stapling device. Should trouble arise the users of the machines, whoare not skilled mechanics, after having dismantled the complicated full-stroke mechanism, will find it extremely diflicult or even impossible to reassemble it.

In contrast thereto, the full-stroke mechanism provided by the present invention is thoroughly simple in construction and assembly. This mechanism consists of a lug on the plunger and a loose raclemovable or guided in the plunger housing transversely thereof. This rack is normally obliquely set, either by means of oppositely acting springs bearing against the ends thereof,

or by having its upper end portion bent at an obtuse angle to the remainder and pressed by a spring against one side of the housing, and is further furnished with an aperture above the uppermost tooth through which the lug on the plunger may pass. As will be described in due course, at the down-stroke of the plunger the rack is pivotally moved by the lug about its upper end, while at the up-stroke oi the plunger the rack is pivotally moved about its lower end 'for the sake of clarity, in the accompanying drawing, in which:

Fig. 1 is a sectional elevation as seen from the side,

Fig. 2 a sectional elevation as seen from the rear end,

Fig. 3 is a cross-section-on the line A-B of Fig. 1,

Fig. 4 is a diagrammatic elevational view of the arresting means in one operative position,

Fig. 5 is an elevational view of the arresting means in another operative position, the broken lines representing a position of the arresting means on the return movement of the plunger, and M Fig. 6 is an elevational view of a modified form of the arresting means illustrating several different positions thereof.

Referring to Figs. 1 to 3, the staple-driving plunger a is provided on its rear face with a lug b formed for instance by an extension of the screw d by means of which the driver member c is secured to the stem of the plunger. The rack associated with the lug b is loosely mounted or supported in the plunger housing, between the two vertical side cheeks f pertaining to the plunger guiding means; but the rack is guided for movement in a plane at right angles to the movement of the lug on the plunger, by means of two guide rods 0 which pass through apertures g in the rack. The rack is bent at an obtuse angle and the lower part e is provided with arresting teeth and gaps, while the upper part E is pressed against one side of the plunger housing by a spring h counter-supported against the other side of the housing. The spring h is helically wound around the upper guide rod g, so that in the position of rest the part e of the rack is obliquely disposed with respect to the side memher i and extends with its lower end angularly across the path of movement of the lug b. Above the uppermost tooth the rack is provided with a suitable aperture or gap i for the reception of the lug b.

Should the plunger a, for any reason not make a complete downward stroke, to completely drive the staple out of the driveway the plunger is prevented from returning to its full upward position. When the plunger a is moved downwardly the teeth on the rack will be deflected by the lug b, and should the downward movement of the plunger be discontinued before the plunger has reached the full limit of its downward stroke. upward movement of the plunger will be prevented by engagement of the lug b with the teeth on the rack, as clearly illustrated in Fig. 4.

The lug may instead of being arranged at the back side of the plunger be arranged at the front side; in this case the rack in the casing is arranged before the plunger.

On complete depression of the plunger the lug b, after deflecting the rack to the requisite extent, reaches the lower end of the rack as shown in full lines in the diagrammatic Fig. 5, in which for the sake of clearness the teeth of the rack have been omitted. Thereupon the rack is immediately restored into the normal position by the spring h pressing against the upper part E, in which position the lower end of the rack is on the opposite side of the lug (this position being shown in dotted lines in Fig. 5). In ascending, on its return movement with the plunger, the lug b then acts upon the rear side of the rack, pressing the same bodily to one side (in the present instance towards the right), Fig. 5, by compressing the spring h, into the position shown in broken lines in Fig. 5, until the lug reaches the gap 1' in the rack, which enables the rack to be restored by the compressed spring h, past the lug, into the initial position. The plunger is then ready for the next operating cycle. In its move-, ments the rack is guided on the rods g.

In contrast to the hitherto known arresting means for the staple-driving plungers of stapling devices the arresting means according to the present invention comprise, as will be seen, apart from the lug on the plunger, merely a single moving part, namely the movably mounted rack which is shaped and adapted to be both pivotally movable and laterally displaceable.- A further advantage ofthe present invention is that the rack is guided between the housing walls along guide elements attached thereto, and can thus not be removed when the device is taken apart for cleaning or other purposes; and thus does not require to be re-assembled, whereas the arresting means hitherto known have to be removed from the device when the device is dismantled.

The rack, as shown in Fig. 3, may have a crosssection like an angle-bar consisting, on the one hand, of a flange e' disposed at right angles to the lug b and provided with the teeth and the gap '2', and, on the other hand, of a flange e" provided with the apertures g for the two guide rods 9. A rack of this angle-bar type is of light weight and yet sufficiently rigid.

ames? end pressing in a direction opposite to the upper spring .3 (Fig. 6). On the downstroke of the plunger 71. the lug p operates the rack in the manner already mentioned. As soon as the lug 1) has reached the lower end of the rack (shown in dotted lines in Fig. 6) the rack is immediately restored into the normal position (towards the right) by the compressed spring m. The lug :2 now ascending on its return movement (with the plunger) finally acts upon the rear side of the rack (shown in. broken lines in Fig. 6) and rocks the rack about its lower end as a fulcrum. When the lug 3) reaches the gap in the rack the compressed spring s moves the rack to the initial position.

The vertical facing plate 7' of the housing is suitably provided with two rearwardly extending vertical side cheeks f leaving between them a middle slot 76 of the breadth of the plunger and guiding the plunger which is disposed at the covering plate I. Thus the plunger a and the rack are arranged in a casing which is open at the rear side for inspection, in case the mechanism should happen to get out of order, and for lubricating the movable parts.

I claim:

1. In a stapling device, a plunger, a plunger housing, means to arrest the upward movement of the plunger before the completion of a full fastener driving stroke, said means comprising a lug extending from the rear face of the plunger, a rack positioned obliquely in the housing and to the path of travel of said lug, said rack supported by two rods secured to the housing, a

As already mentioned, instead of a rack springstressed at the upper end there may also be used a rack q stressed not only by a spring 3 at the upper end but also by a spring m at the lower spring for pressing the upper end of said rack against one side of the housing, said rack having an opening for the passage of said lug, downward movement of said plunger moving said lug against the force of the spring to displace said rack, and return movement of said plunger after a complete driving stroke displacing said rack in the opposite direction until the said rack is released by the passage of said lug through the opening in said rack to restore said rack to its initial position.

2. A stapling device according to claim 1, wherein the rack comprises an L-shaped section. one flange oi which is disposed in the path of the lug and provided with teeth and said opening.

3. A stapling device according to claim 1, wherein besides the spring at the upper end of the rack a spring at the lower end is provided directing its force opposite to the direction of force of the upper spring.

4. A stapling device according to claim 1, wherein the plunger housing is provided with a facing plate and with two rearwardly extending vertical side cheeks leaving between them a middle slot of the breadth of the plunger as a guideway for the plunger.

RUDOLFVANCURA.

US244995A 1938-12-10 1938-12-10 Stapling device Expired - Lifetime US2246647A (en)

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Cited By (42)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2432853A (en) * 1943-06-19 1947-12-16 Vail Mfg Company Implement for driving staples
US2592398A (en) * 1950-06-14 1952-04-08 Jay N Edmondson Stapling machine
US2691778A (en) * 1950-09-08 1954-10-19 Lou Obstfeld Staple driving machine
US5031814A (en) * 1989-05-26 1991-07-16 United States Surgical Corporation Locking mechanism for surgical fastening apparatus
US5106008A (en) * 1989-05-26 1992-04-21 United States Surgical Corporation Locking mechanism for a surgical fastening apparatus
US5156315A (en) * 1990-09-17 1992-10-20 United States Surgical Corporation Arcuate apparatus for applying two-part surgical fasteners
US5253793A (en) * 1990-09-17 1993-10-19 United States Surgical Corporation Apparatus for applying two-part surgical fasteners
USRE34519E (en) * 1988-11-07 1994-01-25 Ethicon, Inc. Surgical stapler cartridge lockout device
US5318221A (en) * 1989-05-26 1994-06-07 United States Surgical Corporation Apparatus and method for placing staples in laparoscopic or endoscopic procedures
US5366133A (en) * 1991-10-18 1994-11-22 United States Surgical Corporation Surgical fastening apparatus with shipping interlock
US5413268A (en) * 1989-05-26 1995-05-09 United States Surgical Corporation Apparatus and method for placing stables in laparoscopic or endoscopic procedures
US5413267A (en) * 1991-05-14 1995-05-09 United States Surgical Corporation Surgical stapler with spent cartridge sensing and lockout means
US5425745A (en) * 1989-05-26 1995-06-20 United States Surgical Corporation Apparatus and method for placing staples in laparoscopic or endoscopic procedures
US5462215A (en) * 1991-10-18 1995-10-31 United States Surgical Corporation Locking device for an apparatus for applying surgical fasteners
US5465896A (en) * 1991-11-07 1995-11-14 United States Surgical Corporation Linear surgical stapling instrument
US5470006A (en) * 1990-12-06 1995-11-28 United States Surgical Corporation Surgical fastening apparatus with locking mechanism
US5470007A (en) * 1994-05-02 1995-11-28 Minnesota Mining And Manufacturing Company Laparoscopic stapler with overload sensor and interlock
US5470009A (en) * 1990-12-06 1995-11-28 United States Surgical Corporation Surgical fastening apparatus with locking mechanism
US5485947A (en) * 1992-07-20 1996-01-23 Ethicon, Inc. Linear stapling mechanism with cutting means
US5489058A (en) * 1994-05-02 1996-02-06 Minnesota Mining And Manufacturing Company Surgical stapler with mechanisms for reducing the firing force
US5636779A (en) * 1994-12-13 1997-06-10 United States Surgical Corporation Apparatus for applying surgical fasteners
US5653373A (en) * 1990-09-17 1997-08-05 United States Surgical Corporation Arcuate apparatus for applying two-part surgical fasteners
US5680983A (en) * 1990-12-18 1997-10-28 United States Surgical Corporation Safety device for a surgical stapler cartridge
US5706998A (en) * 1995-07-17 1998-01-13 United States Surgical Corporation Surgical stapler with alignment pin locking mechanism
US5715988A (en) * 1995-08-14 1998-02-10 United States Surgical Corporation Surgical stapler with lockout mechanism
US5718359A (en) * 1995-08-14 1998-02-17 United States Of America Surgical Corporation Surgical stapler with lockout mechanism
US5735445A (en) * 1995-03-07 1998-04-07 United States Surgical Corporation Surgical stapler
US5893506A (en) * 1994-03-01 1999-04-13 United States Surgical Corporation Surgical stapler with anvil sensor and lockout
US5988479A (en) * 1994-12-13 1999-11-23 United States Surgical Corporation Apparatus for applying surgical fasteners
US6109500A (en) * 1996-10-04 2000-08-29 United States Surgical Corporation Lockout mechanism for a surgical stapler
US6131789A (en) * 1990-11-30 2000-10-17 Ethicon, Inc. Surgical stapler
US20030125717A1 (en) * 2001-12-04 2003-07-03 Whitman Michael P. System and method for calibrating a surgical instrument
US20040094597A1 (en) * 2002-06-14 2004-05-20 Whitman Michael P. Surgical device
US7077856B2 (en) 1999-06-02 2006-07-18 Power Medical Interventions, Inc. Electromechanical driver and remote surgical instrument attachment having computer assisted control capabilities
US7114642B2 (en) 1999-07-12 2006-10-03 Power Medical Interventions, Inc. Expanding parallel jaw device for use with an electromechanical driver device
US7695485B2 (en) 2001-11-30 2010-04-13 Power Medical Interventions, Llc Surgical device
US7918230B2 (en) 2007-09-21 2011-04-05 Tyco Healthcare Group Lp Surgical device having a rotatable jaw portion
US7951071B2 (en) 1999-06-02 2011-05-31 Tyco Healthcare Group Lp Moisture-detecting shaft for use with an electro-mechanical surgical device
US7963433B2 (en) 2007-09-21 2011-06-21 Tyco Healthcare Group Lp Surgical device having multiple drivers
US8016855B2 (en) 2002-01-08 2011-09-13 Tyco Healthcare Group Lp Surgical device
US8025199B2 (en) 2004-02-23 2011-09-27 Tyco Healthcare Group Lp Surgical cutting and stapling device
US9113878B2 (en) 2002-01-08 2015-08-25 Covidien Lp Pinion clip for right angle linear cutter

Cited By (87)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2432853A (en) * 1943-06-19 1947-12-16 Vail Mfg Company Implement for driving staples
US2592398A (en) * 1950-06-14 1952-04-08 Jay N Edmondson Stapling machine
US2691778A (en) * 1950-09-08 1954-10-19 Lou Obstfeld Staple driving machine
USRE34519E (en) * 1988-11-07 1994-01-25 Ethicon, Inc. Surgical stapler cartridge lockout device
US5425745A (en) * 1989-05-26 1995-06-20 United States Surgical Corporation Apparatus and method for placing staples in laparoscopic or endoscopic procedures
US5554169A (en) * 1989-05-26 1996-09-10 United States Surgical Corporation Method for placing staples in laparoscopic or endoscopic procedures
US5413268A (en) * 1989-05-26 1995-05-09 United States Surgical Corporation Apparatus and method for placing stables in laparoscopic or endoscopic procedures
US5106008A (en) * 1989-05-26 1992-04-21 United States Surgical Corporation Locking mechanism for a surgical fastening apparatus
US5318221A (en) * 1989-05-26 1994-06-07 United States Surgical Corporation Apparatus and method for placing staples in laparoscopic or endoscopic procedures
US5031814A (en) * 1989-05-26 1991-07-16 United States Surgical Corporation Locking mechanism for surgical fastening apparatus
US5653373A (en) * 1990-09-17 1997-08-05 United States Surgical Corporation Arcuate apparatus for applying two-part surgical fasteners
US5253793A (en) * 1990-09-17 1993-10-19 United States Surgical Corporation Apparatus for applying two-part surgical fasteners
US5156315A (en) * 1990-09-17 1992-10-20 United States Surgical Corporation Arcuate apparatus for applying two-part surgical fasteners
US5379933A (en) * 1990-09-17 1995-01-10 United States Surgical Corporation Arcuate apparatus for applying two-part surgical fasteners
US6131789A (en) * 1990-11-30 2000-10-17 Ethicon, Inc. Surgical stapler
US5470006A (en) * 1990-12-06 1995-11-28 United States Surgical Corporation Surgical fastening apparatus with locking mechanism
US5470009A (en) * 1990-12-06 1995-11-28 United States Surgical Corporation Surgical fastening apparatus with locking mechanism
US5680983A (en) * 1990-12-18 1997-10-28 United States Surgical Corporation Safety device for a surgical stapler cartridge
US5413267A (en) * 1991-05-14 1995-05-09 United States Surgical Corporation Surgical stapler with spent cartridge sensing and lockout means
US5462215A (en) * 1991-10-18 1995-10-31 United States Surgical Corporation Locking device for an apparatus for applying surgical fasteners
US5366133A (en) * 1991-10-18 1994-11-22 United States Surgical Corporation Surgical fastening apparatus with shipping interlock
US5465896A (en) * 1991-11-07 1995-11-14 United States Surgical Corporation Linear surgical stapling instrument
US5485947A (en) * 1992-07-20 1996-01-23 Ethicon, Inc. Linear stapling mechanism with cutting means
US5893506A (en) * 1994-03-01 1999-04-13 United States Surgical Corporation Surgical stapler with anvil sensor and lockout
US5894979A (en) * 1994-03-01 1999-04-20 United States Surgical Corporation Surgical stapler with anvil sensor and lockout
US5586711A (en) * 1994-05-02 1996-12-24 United States Surgical Corporation Surgical stapler with mechanisms for reducing the firing force
US5630539A (en) * 1994-05-02 1997-05-20 United States Surgical Corporation Laparoscopic stapler with overload sensor and interlock
US5535935A (en) * 1994-05-02 1996-07-16 United States Surgical Corporation Surgical stapler with mechanisms for reducing the firing force
US5489058A (en) * 1994-05-02 1996-02-06 Minnesota Mining And Manufacturing Company Surgical stapler with mechanisms for reducing the firing force
US5816471A (en) * 1994-05-02 1998-10-06 United States Surgical Corporation Surgical stapler with mechanisms for reducing the firing force
US5470007A (en) * 1994-05-02 1995-11-28 Minnesota Mining And Manufacturing Company Laparoscopic stapler with overload sensor and interlock
US5636779A (en) * 1994-12-13 1997-06-10 United States Surgical Corporation Apparatus for applying surgical fasteners
US5988479A (en) * 1994-12-13 1999-11-23 United States Surgical Corporation Apparatus for applying surgical fasteners
US5735445A (en) * 1995-03-07 1998-04-07 United States Surgical Corporation Surgical stapler
US5706998A (en) * 1995-07-17 1998-01-13 United States Surgical Corporation Surgical stapler with alignment pin locking mechanism
US5718359A (en) * 1995-08-14 1998-02-17 United States Of America Surgical Corporation Surgical stapler with lockout mechanism
US5715988A (en) * 1995-08-14 1998-02-10 United States Surgical Corporation Surgical stapler with lockout mechanism
US6109500A (en) * 1996-10-04 2000-08-29 United States Surgical Corporation Lockout mechanism for a surgical stapler
US9033868B2 (en) 1999-06-02 2015-05-19 Covidien Lp Couplings for interconnecting components of an electro-mechanical surgical device
US9782172B2 (en) 1999-06-02 2017-10-10 Covidien Lp Electromechanical drive and remote surgical instrument attachment having computer assisted control capabilities
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US7077856B2 (en) 1999-06-02 2006-07-18 Power Medical Interventions, Inc. Electromechanical driver and remote surgical instrument attachment having computer assisted control capabilities
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US7951071B2 (en) 1999-06-02 2011-05-31 Tyco Healthcare Group Lp Moisture-detecting shaft for use with an electro-mechanical surgical device
US7758613B2 (en) 1999-06-02 2010-07-20 Power Medical Interventions, Llc Electromechanical driver and remote surgical instrument attachment having computer assisted control capabilities
US9241716B2 (en) 1999-06-02 2016-01-26 Covidien Lp Electromechanical drive and remote surgical instrument attachment having computer assisted control capabilities
US9078654B2 (en) 1999-06-02 2015-07-14 Covidien Lp Surgical device
US8628467B2 (en) 1999-06-02 2014-01-14 Covidien Lp Moisture-detecting shaft for use with an electro-mechanical surgical device
US9247940B2 (en) 1999-06-02 2016-02-02 Covidien Lp Surgical cutting and stapling device
US8118208B2 (en) 1999-07-12 2012-02-21 Tyco Healthcare Group Lp Expanding parallel jaw device for use with an electromechanical driver device
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US7537602B2 (en) 1999-07-12 2009-05-26 Power Medical Interventions, Inc. Expanding parallel jaw device for use with an electromechanical driver device
US7114642B2 (en) 1999-07-12 2006-10-03 Power Medical Interventions, Inc. Expanding parallel jaw device for use with an electromechanical driver device
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US20030125717A1 (en) * 2001-12-04 2003-07-03 Whitman Michael P. System and method for calibrating a surgical instrument
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US20100324541A1 (en) * 2001-12-04 2010-12-23 Power Medical Interventions, Llc System and method for calibrating a surgical instrument
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US9861362B2 (en) 2002-06-14 2018-01-09 Covidien Lp Surgical device
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US20100219227A1 (en) * 2002-06-14 2010-09-02 Power Medical Interventions, Llc Surgical device
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US7918230B2 (en) 2007-09-21 2011-04-05 Tyco Healthcare Group Lp Surgical device having a rotatable jaw portion
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US7992758B2 (en) 2007-09-21 2011-08-09 Tyco Healthcare Group Lp Surgical device having a rotatable jaw portion

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